(function($){

	/**
	 * The main builder interface class.
	 *
	 * @since 1.0
	 * @class FLBuilder
	 */
	FLBuilder = {

		/**
		 * An instance of FLBuilderPreview for working
		 * with the current live preview.
		 *
		 * @since 1.3.3
		 * @property {FLBuilderPreview} preview
		 */
		preview                     : null,

		/**
		 * An instance of FLLightbox for displaying a list
		 * of actions a user can take such as publish or cancel.
		 *
		 * @since 1.0
		 * @access private
		 * @property {FLLightbox} _actionsLightbox
		 */
		_actionsLightbox            : null,

		/**
		 * A jQuery reference to a module element that should be
		 * added to a new node after it has been rendered.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Object} _addModuleAfterNodeRender
		 */
		_addModuleAfterNodeRender   : null,

		/**
		 * An object that holds data for column resizing.
		 *
		 * @since 1.6.4
		 * @access private
		 * @property {Object} _colResizeData
		 */
		_colResizeData              : null,

		/**
		 * A flag for whether a column is being resized or not.
		 *
		 * @since 1.6.4
		 * @access private
		 * @property {Boolean} _colResizing
		 */
		_colResizing              	: false,

		/**
		 * The CSS class of the main content wrapper for the
		 * current layout that is being worked on.
		 *
		 * @since 1.0
		 * @access private
		 * @property {String} _contentClass
		 */
		_contentClass               : false,

		/**
		 * Whether dragging has been enabled or not.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Boolean} _dragEnabled
		 */
		_dragEnabled                : false,

		/**
		 * Whether an element is currently being dragged or not.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Boolean} _dragging
		 */
		_dragging                   : false,

		/**
		 * The initial scroll top of the window when a drag starts.
		 * Used to reset the scroll top when a drag is cancelled.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Boolean} _dragging
		 */
		_dragInitialScrollTop       : 0,

		/**
		 * The URL to redirect to when a user leaves the builder.
		 *
		 * @since 1.0
		 * @access private
		 * @property {String} _exitUrl
		 */
		_exitUrl                    : null,

		/**
		 * An instance of FLBuilderAJAXLayout for rendering
		 * the layout via AJAX.
		 *
		 * @since 1.7
		 * @property {FLBuilderAJAXLayout} _layout
		 */
		_layout                     : null,

		/**
		 * A cached copy of custom layout CSS that is used to
		 * revert changes if the cancel button is clicked.
		 *
		 * @since 1.7
		 * @property {String} _layoutSettingsCSSCache
		 */
		_layoutSettingsCSSCache     : null,

		/**
		 * A timeout for throttling custom layout CSS changes.
		 *
		 * @since 1.7
		 * @property {Object} _layoutSettingsCSSTimeout
		 */
		_layoutSettingsCSSTimeout   : null,

		/**
		 * An instance of FLLightbox for displaying settings.
		 *
		 * @since 1.0
		 * @access private
		 * @property {FLLightbox} _lightbox
		 */
		_lightbox                   : null,

		/**
		 * A timeout for refreshing the height of lightbox scrollbars
		 * in case the content changes from dynamic settings.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Object} _lightboxScrollbarTimeout
		 */
		_lightboxScrollbarTimeout   : null,

		/**
		 * An array that's used to cache which module settings
		 * CSS and JS assets have already been loaded so they
		 * are only loaded once.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Array} _loadedModuleAssets
		 */
		_loadedModuleAssets         : [],

		/**
		 * An object used to store module settings helpers.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Object} _moduleHelpers
		 */
		_moduleHelpers              : {},

		/**
		 * An instance of wp.media used to select multiple photos.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Object} _multiplePhotoSelector
		 */
		_multiplePhotoSelector      : null,

		/**
		 * A jQuery reference to a group that a new column
		 * should be added to once it's finished rendering.
		 *
		 * @since 2.0
		 * @access private
		 * @property {Object} _newColParent
		 */
		_newColParent          		: null,

		/**
		 * The position a column should be added to within
		 * a group once it finishes rendering.
		 *
		 * @since 2.0
		 * @access private
		 * @property {Number} _newColPosition
		 */
		_newColPosition        		: 0,

		/**
		 * A jQuery reference to a row that a new column group
		 * should be added to once it's finished rendering.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Object} _newColGroupParent
		 */
		_newColGroupParent          : null,

		/**
		 * The position a column group should be added to within
		 * a row once it finishes rendering.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Number} _newColGroupPosition
		 */
		_newColGroupPosition        : 0,

		/**
		 * A jQuery reference to a new module's parent.
		 *
		 * @since 1.7
		 * @access private
		 * @property {Object} _newModuleParent
		 */
		_newModuleParent          	: null,

		/**
		 * The position a new module should be added at once
		 * it finishes rendering.
		 *
		 * @since 1.7
		 * @access private
		 * @property {Number} _newModulePosition
		 */
		_newModulePosition        	: 0,

		/**
		 * The position a row should be added to within
		 * the layout once it finishes rendering.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Number} _newRowPosition
		 */
		_newRowPosition             : 0,

		/**
		 * The ID of a template that the user has selected.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Number} _selectedTemplateId
		 */
		_selectedTemplateId         : null,

		/**
		 * The type of template that the user has selected.
		 * Possible values are "core" or "user".
		 *
		 * @since 1.0
		 * @access private
		 * @property {String} _selectedTemplateType
		 */
		_selectedTemplateType       : null,

		/**
		 * An instance of wp.media used to select a single photo.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Object} _singlePhotoSelector
		 */
		_singlePhotoSelector        : null,

		/**
		 * An instance of wp.media used to select a single video.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Object} _singleVideoSelector
		 */
		_singleVideoSelector        : null,

		/**
		 * An instance of wp.media used to select a multiple audio.
		 *
		 * @since 1.0
		 * @access private
		 * @property {Object} _multipleAudiosSelector
		 */
		_multipleAudiosSelector        : null,

		/**
		 * Initializes the builder interface.
		 *
		 * @since 1.0
		 * @access private
		 * @method _init
		 */
		_init: function()
		{
			FLBuilder._initJQueryReadyFix();
			FLBuilder._initGlobalErrorHandling();
			FLBuilder._initPostLock();
			FLBuilder._initClassNames();
			FLBuilder._initMediaUploader();
			FLBuilder._initOverflowFix();
			FLBuilder._initScrollbars();
			FLBuilder._initLightboxes();
			FLBuilder._initDropTargets();
			FLBuilder._initSortables();
			FLBuilder._initStrings();
			FLBuilder._initTipTips();
			FLBuilder._initTinyMCE();
			FLBuilder._bindEvents();
			FLBuilder._bindOverlayEvents();
			FLBuilder._setupEmptyLayout();
			FLBuilder._highlightEmptyCols();

			FLBuilder.addHook('didInitUI', FLBuilder._showTourOrTemplates.bind(FLBuilder) );

			FLBuilder.triggerHook('init');
		},

		/**
		 * Prevent errors thrown in jQuery's ready function
		 * from breaking subsequent ready calls.
		 *
		 * @since 1.4.6
		 * @access private
		 * @method _initJQueryReadyFix
		 */
		_initJQueryReadyFix: function()
		{
			if ( FLBuilderConfig.debug ) {
				return;
			}

			jQuery.fn.oldReady = jQuery.fn.ready;

			jQuery.fn.ready = function( fn ) {
				return jQuery.fn.oldReady( function() {
					try {
						if ( 'function' == typeof fn ) {
							fn( $ );
						}
					}
					catch ( e ){
						FLBuilder.logError( e );
					}
				});
			};
		},

		/**
		 * Try to prevent errors from third party plugins
		 * from breaking the builder.
		 *
		 * @since 1.4.6
		 * @access private
		 * @method _initGlobalErrorHandling
		 */
		_initGlobalErrorHandling: function()
		{
			if ( FLBuilderConfig.debug ) {
				return;
			}

			window.onerror = function( message, file, line, col, error ) {
				FLBuilder.logGlobalError( message, file, line, col, error );
				return true;
			};
		},

		/**
		 * Send a wp.heartbeat request to lock editing of this
		 * post so it can only be edited by the current user.
		 *
		 * @since 1.0.6
		 * @access private
		 * @method _initPostLock
		 */
		_initPostLock: function()
		{
			if(typeof wp.heartbeat != 'undefined') {

				wp.heartbeat.interval(30);

				wp.heartbeat.enqueue('fl_builder_post_lock', {
					post_id: FLBuilderConfig.postId
				});
			}
		},

		/**
		 * Initializes html and body classes as well as the
		 * builder content class for this post.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initClassNames
		 */
		_initClassNames: function()
		{
			$('html').addClass('fl-builder-edit');
			$('body').addClass('fl-builder');

			if(FLBuilderConfig.simpleUi) {
				$('body').addClass('fl-builder-simple');
			}

			FLBuilder._contentClass = '.fl-builder-content-' + FLBuilderConfig.postId;

			$( FLBuilder._contentClass ).addClass( 'fl-builder-content-editing' );
		},

		/**
		 * Initializes the WordPress media uploader so any files
		 * uploaded will be attached to the current post.
		 *
		 * @since 1.2.2
		 * @access private
		 * @method _initMediaUploader
		 */
		_initMediaUploader: function()
		{
			wp.media.model.settings.post.id = FLBuilderConfig.postId;
		},

		/**
		 * Third party themes that set their content wrappers to
		 * overflow:hidden break builder overlays. We set them
		 * to overflow:visible while editing.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initOverflowFix
		 */
		_initOverflowFix: function()
		{
			$(FLBuilder._contentClass).parents().css('overflow', 'visible');
		},

		/**
		 * Initializes Nano Scroller scrollbars for the
		 * builder interface.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initScrollbars
		 */
		_initScrollbars: function()
		{
			$('.fl-nanoscroller').nanoScroller({
				alwaysVisible: true,
				preventPageScrolling: true,
				paneClass: 'fl-nanoscroller-pane',
				sliderClass: 'fl-nanoscroller-slider',
				contentClass: 'fl-nanoscroller-content'
			});
		},

		/**
		 * Initializes jQuery sortables for drag and drop.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initSortables
		 */
		_initSortables: function()
		{
			var defaults = {
				appendTo: 'body',
				cursor: 'move',
				cursorAt: {
					left: 85,
					top: 20
				},
				distance: 1,
				helper: FLBuilder._blockDragHelper,
				start : FLBuilder._blockDragStart,
				sort: FLBuilder._blockDragSort,
				change: FLBuilder._blockDragChange,
				stop: FLBuilder._blockDragStop,
				placeholder: 'fl-builder-drop-zone',
				tolerance: 'intersect'
			},
			rowConnections 	  = '',
			moduleConnections = '';

			// Module Connections.
			if ( 'row' == FLBuilderConfig.userTemplateType )  {
				moduleConnections = FLBuilder._contentClass + ' .fl-col-group-drop-target, ' +
									FLBuilder._contentClass + ' .fl-col-drop-target, ' +
							  		FLBuilder._contentClass + ' .fl-col-content';
			}
			else {
				moduleConnections = FLBuilder._contentClass + ' .fl-row-drop-target, ' +
									FLBuilder._contentClass + ' .fl-col-group-drop-target, ' +
									FLBuilder._contentClass + ' .fl-col-drop-target, ' +
							  		FLBuilder._contentClass + ' .fl-row:not(.fl-node-global) .fl-col-content';
			}

			// Row Connections.
			if ( FLBuilderConfig.nestedColumns ) {
				rowConnections = moduleConnections;
			}
			else if ( 'row' == FLBuilderConfig.userTemplateType )  {
				rowConnections = FLBuilder._contentClass + ' .fl-col-group-drop-target, ' +
								 FLBuilder._contentClass + ' .fl-col-drop-target';
			}
			else {
				rowConnections = FLBuilder._contentClass + ' .fl-row-drop-target, ' +
								 FLBuilder._contentClass + ' .fl-col-group-drop-target, ' +
								 FLBuilder._contentClass + ' .fl-col-drop-target';
			}

			// Row layouts from the builder panel.
			$('.fl-builder-rows').sortable($.extend({}, defaults, {
				connectWith: rowConnections,
				items: '.fl-builder-block-row',
				stop: FLBuilder._rowDragStop
			}));

			// Row templates from the builder panel.
			$('.fl-builder-row-templates').sortable($.extend({}, defaults, {
				connectWith: FLBuilder._contentClass + ' .fl-row-drop-target',
				items: '.fl-builder-block-row-template',
				stop: FLBuilder._nodeTemplateDragStop
			}));

			// Saved rows from the builder panel.
			$('.fl-builder-saved-rows').sortable($.extend({}, defaults, {
				cancel: '.fl-builder-node-template-actions, .fl-builder-node-template-edit, .fl-builder-node-template-delete',
				connectWith: FLBuilder._contentClass + ' .fl-row-drop-target',
				items: '.fl-builder-block-saved-row',
				stop: FLBuilder._nodeTemplateDragStop
			}));

			// Modules from the builder panel.
			$('.fl-builder-modules, .fl-builder-widgets').sortable($.extend({}, defaults, {
				connectWith: moduleConnections,
				items: '.fl-builder-block-module',
				stop: FLBuilder._moduleDragStop
			}));

			// Module templates from the builder panel.
			$('.fl-builder-module-templates').sortable($.extend({}, defaults, {
				connectWith: moduleConnections,
				items: '.fl-builder-block-module-template',
				stop: FLBuilder._nodeTemplateDragStop
			}));

			// Saved modules from the builder panel.
			$('.fl-builder-saved-modules').sortable($.extend({}, defaults, {
				cancel: '.fl-builder-node-template-actions, .fl-builder-node-template-edit, .fl-builder-node-template-delete',
				connectWith: moduleConnections,
				items: '.fl-builder-block-saved-module',
				stop: FLBuilder._nodeTemplateDragStop
			}));

			// Rows
			$('.fl-row-sortable-proxy').sortable($.extend({}, defaults, {
				connectWith: FLBuilder._contentClass + ' .fl-row-drop-target',
				helper: FLBuilder._rowDragHelper,
				start: FLBuilder._rowDragStart,
				stop: FLBuilder._rowDragStop
			}));

			// Columns
			$('.fl-col-sortable-proxy').sortable($.extend({}, defaults, {
				connectWith: moduleConnections,
				helper: FLBuilder._colDragHelper,
				start: FLBuilder._colDragStart,
				stop: FLBuilder._colDragStop
			}));

			// Modules
			$(FLBuilder._contentClass + ' .fl-col-content').sortable($.extend({}, defaults, {
				connectWith: moduleConnections,
				handle: '.fl-module-overlay .fl-block-overlay-actions .fl-block-move',
				helper: FLBuilder._moduleDragHelper,
				items: '.fl-module, .fl-col-group',
				start: FLBuilder._moduleDragStart,
				stop: FLBuilder._moduleDragStop
			}));

			// Drop targets
			$(FLBuilder._contentClass + ' .fl-row-drop-target').sortable( defaults );
			$(FLBuilder._contentClass + ' .fl-col-group-drop-target').sortable( defaults );
			$(FLBuilder._contentClass + ' .fl-col-drop-target').sortable( defaults );
		},

		/**
		 * Initializes text translation
		 *
		 * @since 1.0
		 * @access private
		 * @method _initStrings
		 */
		_initStrings: function()
		{
			$.validator.messages.required = FLBuilderStrings.validateRequiredMessage;
		},

		/**
		 * Binds most of the events for the builder interface.
		 *
		 * @since 1.0
		 * @access private
		 * @method _bindEvents
		 */
		_bindEvents: function()
		{

			/* Links */
			$excludedLinks = $('.fl-builder-bar a, .fl-builder--content-library-panel a, .fl-page-nav .nav a'); // links in ui shouldn't be disabled.
			$('a').not($excludedLinks).on('click', FLBuilder._preventDefault);
			$('.fl-page-nav .nav a').on('click', FLBuilder._headerLinkClicked);

			$('body').delegate('button.fl-builder-button', 'mouseup', this._buttonMouseUp.bind(this) );

			/* Heartbeat */
			$(document).on('heartbeat-tick', FLBuilder._initPostLock);

			/* Unload Warning */
			$(window).on('beforeunload', FLBuilder._warnBeforeUnload);

			/* Submenus */
			$('body').delegate('.fl-builder-has-submenu', 'click', FLBuilder._submenuParentClicked);
			$('body').delegate('.fl-builder-has-submenu a', 'click', FLBuilder._submenuChildClicked);
			$('body').delegate('.fl-builder-submenu', 'mouseenter', FLBuilder._submenuMouseenter);
			$('body').delegate('.fl-builder-submenu', 'mouseleave', FLBuilder._submenuMouseleave);
			$('body').delegate('.fl-builder-submenu .fl-builder-has-submenu', 'mouseenter', FLBuilder._submenuNestedParentMouseenter);

			/* Panel */
			$('.fl-builder-panel-actions .fl-builder-panel-close').on('click', FLBuilder._closePanel);
			$('.fl-builder-blocks-section-title').on('click', FLBuilder._blockSectionTitleClicked);
			$('body').delegate('.fl-builder-node-template-actions', 'mousedown', FLBuilder._stopPropagation);
			$('body').delegate('.fl-builder-node-template-edit', 'mousedown', FLBuilder._stopPropagation);
			$('body').delegate('.fl-builder-node-template-delete', 'mousedown', FLBuilder._stopPropagation);
			$('body').delegate('.fl-builder-node-template-edit', 'click', FLBuilder._editNodeTemplateClicked);
			$('body').delegate('.fl-builder-node-template-delete', 'click', FLBuilder._deleteNodeTemplateClicked);

			$('body').delegate('.fl-builder-block', 'mousedown', FLBuilder._blockDragInit );
			$('body').on('mouseup', FLBuilder._blockDragCancel);

			/* Actions Lightbox */
			$('body').delegate('.fl-builder-actions .fl-builder-cancel-button', 'click', FLBuilder._cancelButtonClicked);

			/* Tools Actions */
			$('body').delegate('.fl-builder-save-user-template-button', 'click', FLBuilder._saveUserTemplateClicked);
			$('body').delegate('.fl-builder-duplicate-layout-button', 'click', FLBuilder._duplicateLayoutClicked);
			$('body').delegate('.fl-builder-layout-settings-button', 'click', FLBuilder._layoutSettingsClicked);
			$('body').delegate('.fl-builder-layout-settings .fl-builder-settings-save', 'click', FLBuilder._saveLayoutSettingsClicked);
			$('body').delegate('.fl-builder-layout-settings .fl-builder-settings-cancel', 'click', FLBuilder._cancelLayoutSettingsClicked);
			$('body').delegate('.fl-builder-global-settings-button', 'click', FLBuilder._globalSettingsClicked);
			$('body').delegate('.fl-builder-global-settings .fl-builder-settings-save', 'click', FLBuilder._saveGlobalSettingsClicked);
			$('body').delegate('.fl-builder-global-settings .fl-builder-settings-cancel', 'click', FLBuilder._cancelLayoutSettingsClicked);

			/* Template Panel Tab */
			$('body').delegate('.fl-user-template', 'click', FLBuilder._userTemplateClicked);
			$('body').delegate('.fl-user-template-edit', 'click', FLBuilder._editUserTemplateClicked);
			$('body').delegate('.fl-user-template-delete', 'click', FLBuilder._deleteUserTemplateClicked);
			$('body').delegate('.fl-builder-template-replace-button', 'click', FLBuilder._templateReplaceClicked);
			$('body').delegate('.fl-builder-template-append-button', 'click', FLBuilder._templateAppendClicked);
			$('body').delegate('.fl-builder-template-actions .fl-builder-cancel-button', 'click', FLBuilder._templateCancelClicked);

			/* User Template Settings */
			$('body').delegate('.fl-builder-user-template-settings .fl-builder-settings-save', 'click', FLBuilder._saveUserTemplateSettings);

			/* Help Actions */
			$('body').delegate('.fl-builder-help-tour-button', 'click', FLBuilder._startHelpTour);
			$('body').delegate('.fl-builder-knowledge-base-button', 'click', FLBuilder._viewKnowledgeBaseClicked);
			$('body').delegate('.fl-builder-forums-button', 'click', FLBuilder._visitForumsClicked);

			/* Welcome Actions */
			$('body').delegate('.fl-builder-no-tour-button', 'click', FLBuilder._noTourButtonClicked);
			$('body').delegate('.fl-builder-yes-tour-button', 'click', FLBuilder._yesTourButtonClicked);

			/* Alert Lightbox */
			$('body').delegate('.fl-builder-alert-close', 'click', FLBuilder._alertClose);

			/* Rows */
			$('body').delegate('.fl-row-overlay .fl-block-remove', 'click', FLBuilder._deleteRowClicked);
			$('body').delegate('.fl-row-overlay .fl-block-copy', 'click', FLBuilder._rowCopyClicked);
			$('body').delegate('.fl-row-overlay .fl-block-move', 'mousedown', FLBuilder._rowDragInit);
			$('body').delegate('.fl-row-overlay .fl-block-settings', 'click', FLBuilder._rowSettingsClicked);
			$('body').delegate('.fl-row-overlay', 'click', FLBuilder._rowSettingsClicked);
			$('body').delegate('.fl-builder-row-settings .fl-builder-settings-save', 'click', FLBuilder._saveSettings);

			/* Rows Submenu */
			$('body').delegate('.fl-block-col-submenu .fl-block-row-reset', 'click', FLBuilder._resetRowWidthClicked);

			/* Columns */
			$('body').delegate('.fl-col-overlay .fl-block-move', 'mousedown', FLBuilder._colDragInit);
			$('body').delegate('.fl-block-col-copy', 'click', FLBuilder._copyColClicked);
			$('body').delegate('.fl-col-overlay .fl-block-remove', 'click', FLBuilder._deleteColClicked);
			$('body').delegate('.fl-col-overlay', 'click', FLBuilder._colSettingsClicked);
			$('body').delegate('.fl-builder-col-settings .fl-builder-settings-save', 'click', FLBuilder._saveSettings);

			/* Columns Submenu */
			$('body').delegate('.fl-block-col-submenu .fl-block-col-move', 'mousedown', FLBuilder._colDragInit);
			$('body').delegate('.fl-block-col-submenu .fl-block-col-edit', 'click', FLBuilder._colSettingsClicked);
			$('body').delegate('.fl-block-col-submenu .fl-block-col-delete', 'click', FLBuilder._deleteColClicked);
			$('body').delegate('.fl-block-col-submenu .fl-block-col-reset', 'click', FLBuilder._resetColumnWidthsClicked);
			$('body').delegate('.fl-block-col-submenu li', 'mouseenter', FLBuilder._showColHighlightGuide);
			$('body').delegate('.fl-block-col-submenu li', 'mouseleave', FLBuilder._removeColHighlightGuides);

			/* Columns Submenu (Parent Column) */
			$('body').delegate('.fl-block-col-submenu .fl-block-col-move-parent', 'mousedown', FLBuilder._colDragInit);
			$('body').delegate('.fl-block-col-submenu .fl-block-col-edit-parent', 'click', FLBuilder._colSettingsClicked);

			/* Modules */
			$('body').delegate('.fl-module-overlay .fl-block-remove', 'click', FLBuilder._deleteModuleClicked);
			$('body').delegate('.fl-module-overlay .fl-block-copy', 'click', FLBuilder._moduleCopyClicked);
			$('body').delegate('.fl-module-overlay .fl-block-move', 'mousedown', FLBuilder._blockDragInit);
			$('body').delegate('.fl-module-overlay .fl-block-settings', 'click', FLBuilder._moduleSettingsClicked);
			$('body').delegate('.fl-module-overlay', 'click', FLBuilder._moduleSettingsClicked);
			$('body').delegate('.fl-builder-module-settings .fl-builder-settings-save', 'click', FLBuilder._saveModuleClicked);

			/* Node Templates */
			$('body').delegate('.fl-builder-settings-save-as', 'click', FLBuilder._showNodeTemplateSettings);
			$('body').delegate('.fl-builder-node-template-settings .fl-builder-settings-save', 'click', FLBuilder._saveNodeTemplate);

			/* Settings */
			$('body').delegate('.fl-builder-settings-tabs a', 'click', FLBuilder._settingsTabClicked);
			$('body').delegate('.fl-builder-settings-tabs a', 'show', FLBuilder._calculateSettingsTabsOverflow);
			$('body').delegate('.fl-builder-settings-tabs a', 'hide', FLBuilder._calculateSettingsTabsOverflow);
			$('body').delegate('.fl-builder-settings-cancel', 'click', FLBuilder._settingsCancelClicked);

			/* Settings Tabs Overflow menu */
			$('body').delegate('.fl-builder-settings-tabs-overflow-menu > a', 'click', FLBuilder._settingsTabsToOverflowMenuItemClicked.bind(this));
			$('body').delegate('.fl-builder-settings-tabs-more', 'click', FLBuilder._toggleTabsOverflowMenu.bind(this) );
			$('body').delegate('.fl-builder-settings-tabs-overflow-click-mask', 'click', FLBuilder._hideTabsOverflowMenu.bind(this));

			/* Tooltips */
			$('body').delegate('.fl-help-tooltip-icon', 'mouseover', FLBuilder._showHelpTooltip);
			$('body').delegate('.fl-help-tooltip-icon', 'mouseout', FLBuilder._hideHelpTooltip);

			/* Multiple Fields */
			$('body').delegate('.fl-builder-field-add', 'click', FLBuilder._addFieldClicked);
			$('body').delegate('.fl-builder-field-copy', 'click', FLBuilder._copyFieldClicked);
			$('body').delegate('.fl-builder-field-delete', 'click', FLBuilder._deleteFieldClicked);

			/* Select Fields */
			$('body').delegate('.fl-builder-settings-fields select', 'change', FLBuilder._settingsSelectChanged);

			/* Photo Fields */
			$('body').delegate('.fl-photo-field .fl-photo-select', 'click', FLBuilder._selectSinglePhoto);
			$('body').delegate('.fl-photo-field .fl-photo-edit', 'click', FLBuilder._selectSinglePhoto);
			$('body').delegate('.fl-photo-field .fl-photo-replace', 'click', FLBuilder._selectSinglePhoto);
			$('body').delegate('.fl-photo-field .fl-photo-remove', 'click', FLBuilder._singlePhotoRemoved);

			/* Multiple Photo Fields */
			$('body').delegate('.fl-multiple-photos-field .fl-multiple-photos-select', 'click', FLBuilder._selectMultiplePhotos);
			$('body').delegate('.fl-multiple-photos-field .fl-multiple-photos-edit', 'click', FLBuilder._selectMultiplePhotos);
			$('body').delegate('.fl-multiple-photos-field .fl-multiple-photos-add', 'click', FLBuilder._selectMultiplePhotos);

			/* Video Fields */
			$('body').delegate('.fl-video-field .fl-video-select', 'click', FLBuilder._selectSingleVideo);
			$('body').delegate('.fl-video-field .fl-video-replace', 'click', FLBuilder._selectSingleVideo);

			/* Multiple Audio Fields */
			$('body').delegate('.fl-multiple-audios-field .fl-multiple-audios-select', 'click', FLBuilder._selectMultipleAudios);
			$('body').delegate('.fl-multiple-audios-field .fl-multiple-audios-edit', 'click', FLBuilder._selectMultipleAudios);
			$('body').delegate('.fl-multiple-audios-field .fl-multiple-audios-add', 'click', FLBuilder._selectMultipleAudios);

			/* Icon Fields */
			$('body').delegate('.fl-icon-field .fl-icon-select', 'click', FLBuilder._selectIcon);
			$('body').delegate('.fl-icon-field .fl-icon-replace', 'click', FLBuilder._selectIcon);
			$('body').delegate('.fl-icon-field .fl-icon-remove', 'click', FLBuilder._removeIcon);

			/* Settings Form Fields */
			$('body').delegate('.fl-form-field .fl-form-field-edit', 'click', FLBuilder._formFieldClicked);
			$('body').delegate('.fl-form-field-settings .fl-builder-settings-save', 'click', FLBuilder._saveFormFieldClicked);

			/* Layout Fields */
			$('body').delegate('.fl-layout-field-option', 'click', FLBuilder._layoutFieldClicked);

			/* Links Fields */
			$('body').delegate('.fl-link-field-select', 'click', FLBuilder._linkFieldSelectClicked);
			$('body').delegate('.fl-link-field-search-cancel', 'click', FLBuilder._linkFieldSelectCancelClicked);

			/* Loop Settings Fields */
			$('body').delegate('.fl-loop-data-source-select select[name=data_source]', 'change', FLBuilder._loopDataSourceChange);
			$('body').delegate('.fl-custom-query select[name=post_type]', 'change', FLBuilder._customQueryPostTypeChange);

			/* Number Fields */
			$('body').delegate('.fl-field input[type=number]', 'focus', FLBuilder._onNumberFieldFocus );
			$('body').delegate('.fl-field input[type=number]', 'blur', FLBuilder._onNumberFieldBlur );

			// Live Preview
			FLBuilder.addHook( 'didCompleteAJAX', FLBuilder._refreshSettingsPreviewReference );
			FLBuilder.addHook( 'didRenderLayoutComplete', FLBuilder._refreshSettingsPreviewReference );
		},

		/**
		 * Remove events when ending the edit session
		 * @since 2.0
		 * @access private
		 */
		_unbindEvents: function() {
			$('a').off('click', FLBuilder._preventDefault);
			$('.fl-page-nav .nav a').off('click', FLBuilder._headerLinkClicked);
		},

		/**
		 * Binds the events for overlays that appear when
		 * mousing over a row, column or module.
		 *
		 * @since 1.0
		 * @access private
		 * @method _bindOverlayEvents
		 */
		_bindOverlayEvents: function()
		{
			var content = $(FLBuilder._contentClass);

			content.delegate('.fl-row', 'mouseenter', FLBuilder._rowMouseenter);
			content.delegate('.fl-row', 'mouseleave', FLBuilder._rowMouseleave);
			content.delegate('.fl-row-overlay', 'mouseleave', FLBuilder._rowMouseleave);
			content.delegate('.fl-col', 'mouseenter', FLBuilder._colMouseenter);
			content.delegate('.fl-col', 'mouseleave', FLBuilder._colMouseleave);
			content.delegate('.fl-module', 'mouseenter', FLBuilder._moduleMouseenter);
			content.delegate('.fl-module', 'mouseleave', FLBuilder._moduleMouseleave);
		},

		/**
		 * Unbinds the events for overlays that appear when
		 * mousing over a row, column or module.
		 *
		 * @since 1.0
		 * @access private
		 * @method _destroyOverlayEvents
		 */
		_destroyOverlayEvents: function()
		{
			var content = $(FLBuilder._contentClass);

			content.undelegate('.fl-row', 'mouseenter', FLBuilder._rowMouseenter);
			content.undelegate('.fl-row', 'mouseleave', FLBuilder._rowMouseleave);
			content.undelegate('.fl-row-overlay', 'mouseleave', FLBuilder._rowMouseleave);
			content.undelegate('.fl-col', 'mouseenter', FLBuilder._colMouseenter);
			content.undelegate('.fl-col', 'mouseleave', FLBuilder._colMouseleave);
			content.undelegate('.fl-module', 'mouseenter', FLBuilder._moduleMouseenter);
			content.undelegate('.fl-module', 'mouseleave', FLBuilder._moduleMouseleave);
		},

		/**
		 * Prevents the default action for an event.
		 *
		 * @since 1.6.3
		 * @access private
		 * @method _preventDefault
		 * @param {Object} e The event object.
		 */
		_preventDefault: function( e )
		{
			e.preventDefault();
		},

		/**
		 * Prevents propagation of an event.
		 *
		 * @since 1.6.3
		 * @access private
		 * @method _stopPropagation
		 * @param {Object} e The event object.
		 */
		_stopPropagation: function( e )
		{
			e.stopPropagation();
		},

		/**
		 * Launches the builder for another page if a link in the
		 * builder theme header is clicked.
		 *
		 * @since 1.3.9
		 * @access private
		 * @method _headerLinkClicked
		 * @param {Object} e The event object.
		 */
		_headerLinkClicked: function(e)
		{
			var link = $(this),

			href = link.attr('href');

			// ignore links with a #hash
			if( this.hash ) {
				return;
			}

			e.preventDefault();

			if ( FLBuilderConfig.isUserTemplate )  {
				return;
			}

			FLBuilder._exitUrl = href.indexOf('?') > -1 ? href : href + '?fl_builder';
			FLBuilder.triggerHook('triggerDone');
		},

		/**
		 * Warns the user that their changes won't be saved if
		 * they leave the page while editing settings.
		 *
		 * @since 1.0.6
		 * @access private
		 * @method _warnBeforeUnload
		 * @return {String} The warning message.
		 */
		_warnBeforeUnload: function()
		{
			var rowSettings     = $('.fl-builder-row-settings').length > 0,
				colSettings     = $('.fl-builder-col-settings').length > 0,
				moduleSettings  = $('.fl-builder-module-settings').length > 0;

			if(rowSettings || colSettings || moduleSettings) {
				return FLBuilderStrings.unloadWarning;
			}
		},

		/* TipTips
		----------------------------------------------------------*/

		/**
		 * Initializes tooltip help messages.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _initTipTips
		 */
		_initTipTips: function()
		{
			$('.fl-tip:not(.fl-has-tip)').each( function(){
				var ele = $( this );
				ele.addClass( 'fl-has-tip' );
				if ( undefined == ele.attr( 'data-title' ) ) {
					ele.attr( 'data-title', ele.attr( 'title' ) );
				}
			} ).tipTip( {
				defaultPosition : 'top',
				delay           : 1000
			} );
		},

		/**
		 * Removes all tooltip help messages from the screen.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _hideTipTips
		 */
		_hideTipTips: function()
		{
			$('#tiptip_holder').stop().hide();
		},

		/* Submenus
		----------------------------------------------------------*/

		/**
		 * Callback for when the parent of a submenu is clicked.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _submenuParentClicked
		 * @param {Object} e The event object.
		 */
		_submenuParentClicked: function( e )
		{
			var body     = $( 'body' ),
				parent 	 = $( this ),
				submenu  = parent.find( '.fl-builder-submenu' );

			if ( parent.hasClass( 'fl-builder-submenu-open' ) ) {
				body.removeClass( 'fl-builder-submenu-open' );
				parent.removeClass( 'fl-builder-submenu-open' );
				parent.removeClass( 'fl-builder-submenu-right' );
			}
			else {

				if( parent.offset().left + submenu.width() > $( window ).width() ) {
					parent.addClass( 'fl-builder-submenu-right' );
				}

				body.addClass( 'fl-builder-submenu-open' );
				parent.addClass( 'fl-builder-submenu-open' );
			}

			FLBuilder._hideTipTips();
			e.preventDefault();
			e.stopPropagation();
		},

		/**
		 * Callback for when the child of a submenu is clicked.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _submenuChildClicked
		 * @param {Object} e The event object.
		 */
		_submenuChildClicked: function( e )
		{
			var body   = $( 'body' ),
				parent = $( this ).parents( '.fl-builder-has-submenu' );

			if ( ! parent.parents( '.fl-builder-has-submenu' ).length ) {
				body.removeClass( 'fl-builder-submenu-open' );
				parent.removeClass( 'fl-builder-submenu-open' );
			}
		},

		/**
		 * Callback for when the mouse enters a submenu.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _submenuMouseenter
		 * @param {Object} e The event object.
		 */
		_submenuMouseenter: function( e )
		{
			var menu 	= $( this ),
				timeout = menu.data( 'timeout' );

			if ( 'undefined' != typeof timeout ) {
				clearTimeout( timeout );
			}
		},

		/**
		 * Callback for when the mouse leaves a submenu.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _submenuMouseleave
		 * @param {Object} e The event object.
		 */
		_submenuMouseleave: function( e )
		{
			var body    = $( 'body' ),
				menu 	= $( this ),
				timeout = setTimeout( function() {
					body.removeClass( 'fl-builder-submenu-open' );
					menu.closest( '.fl-builder-has-submenu' ).removeClass( 'fl-builder-submenu-open' );
				}, 500 );

			menu.data( 'timeout', timeout );
		},

		/**
		 * Callback for when the mouse enters the parent
		 * of a nested submenu.
		 *
		 * @since 1.9
		 * @access private
		 * @method _submenuNestedParentMouseenter
		 * @param {Object} e The event object.
		 */
		_submenuNestedParentMouseenter: function( e )
		{
			var parent 	 = $( this ),
				submenu  = parent.find( '.fl-builder-submenu' );

			if( parent.width() + parent.offset().left + submenu.width() > $( window ).width() ) {
				parent.addClass( 'fl-builder-submenu-right' );
			}
		},

		/**
		 * Closes all open submenus.
		 *
		 * @since 1.9
		 * @access private
		 * @method _closeAllSubmenus
		 */
		_closeAllSubmenus: function()
		{
			$( '.fl-builder-submenu-open' ).removeClass( 'fl-builder-submenu-open' );
		},

		/* Bar
		----------------------------------------------------------*/

		/**
		 * Opens a new window with the upgrade URL when the
		 * upgrade button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _upgradeClicked
		 */
		_upgradeClicked: function()
		{
			window.open(FLBuilderConfig.upgradeUrl);
		},

		/**
		 * Fires blur on mouse up to avoid focus ring when clicked with mouse.
		 *
		 * @since 2.0
		 * @access private
		 * @method _buttonMouseUp
		 * @param {Event} e
		 * @return void
		 */
		_buttonMouseUp: function(e) {
			$(e.currentTarget).blur();
		},

		/* Panel
		----------------------------------------------------------*/

		/**
		 * Closes the builder's content panel.
		 *
		 * @since 1.0
		 * @access private
		 * @method _closePanel
		 */
		_closePanel: function()
		{
			FLBuilder.triggerHook('hideContentPanel');
		},

		/**
		 * Opens the builder's content panel.
		 *
		 * @since 1.0
		 * @access private
		 * @method _showPanel
		 */
		_showPanel: function()
		{
			FLBuilder.triggerHook('showContentPanel');
		},

		/**
		 * Toggle the panel open or closed.
		 *
		 * @since 2.0
		 * @access private
		 * @method _togglePanel
		 */
		_togglePanel: function()
		{
			FLBuilder.triggerHook('toggleContentPanel');
		},

		/**
		 * Opens or closes a section in the builder's content panel
		 * when a section title is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _blockSectionTitleClicked
		 */
		_blockSectionTitleClicked: function()
		{
			var title   = $(this),
				section = title.parent();

			if(section.hasClass('fl-active')) {
				section.removeClass('fl-active');
			}
			else {
				$('.fl-builder-blocks-section').removeClass('fl-active');
				section.addClass('fl-active');
			}

			FLBuilder._initScrollbars();
		},

		/* Save Actions
		----------------------------------------------------------*/

		/**
		* Publish the current layout
		*
		* @since 2.0
		* @access private
		* @method _publishLayout
		* @param bool whether or not builder should exit after publish
		* @return void
		*/
		_publishLayout: function( shouldExit ) {

			// Save existing settings first if any exist. Don't proceed if it fails.
			if ( ! FLBuilder._triggerSettingsSave( false, true ) ) {
				return;
			}

			if ( _.isUndefined( shouldExit ) ) {
				var shouldExit = true;
			}

			FLBuilder.ajax( {
				action: 'save_layout'
			}, this._onPublishComplete.bind( this, shouldExit ) );
		},

		/**
		 * Publishes the layout when the publish button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @param bool whether or not builder should exit after publish
		 * @method _publishButtonClicked
		 */
		_publishButtonClicked: function( shouldExit )
		{
			FLBuilder._publishLayout( shouldExit );
		},

		/**
		 * Fires on successful ajax publish.
		 *
		 * @since 2.0
		 * @access private
		 * @param bool whether or not builder should exit after publish
		 * @return void
		 */
		_onPublishComplete: function( shouldExit ) {
			if ( shouldExit ) {
				if ( FLBuilderConfig.shouldRefreshOnPublish ) {
					FLBuilder._exit();
				} else {
					FLBuilder._exitWithoutRefresh();
				}
			}

			// Change the admin bar status dot to green if it isn't already
			$('#wp-admin-bar-fl-builder-frontend-edit-link .fl-builder-admin-bar-status-dot').css('color', '#6bc373');

			FLBuilder.triggerHook( 'didPublishLayout' );
		},

		/**
		 * Exits the builder when the save draft button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _draftButtonClicked
		 */
		_draftButtonClicked: function()
		{
			FLBuilder.showAjaxLoader();

			FLBuilder.ajax({
				action: 'save_draft'
			}, FLBuilder._exit);
		},

		/**
		 * Clears changes to the layout when the discard draft button
		 * is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _discardButtonClicked
		 */
		_discardButtonClicked: function()
		{
			var result = confirm(FLBuilderStrings.discardMessage);

			if(result) {

				FLBuilder.showAjaxLoader();

				FLBuilder.ajax({
					action: 'clear_draft_layout'
				}, FLBuilder._exit);
			} else {
				FLBuilder.triggerHook('didCancelDiscard');
			}
		},

		/**
		 * Closes the actions lightbox when the cancel button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _cancelButtonClicked
		 */
		_cancelButtonClicked: function()
		{
			FLBuilder._exitUrl = null;
			FLBuilder._actionsLightbox.close();
		},

		/**
		 * Redirects the user to the _exitUrl if defined, otherwise
		 * it redirects the user to the current post without the
		 * builder active.
		 *
		 * @since 1.0
		 * @since 1.5.7 Closes the window if we're in a child window.
		 * @access private
		 * @method _exit
		 */
		_exit: function()
		{
			var href = window.location.href;

			if ( FLBuilderConfig.isUserTemplate && typeof window.opener != 'undefined' && window.opener ) {

				if ( typeof window.opener.FLBuilder != 'undefined' ) {
					if ( 'undefined' === typeof FLBuilderGlobalNodeId ) {
						window.opener.FLBuilder._updateLayout();
					} else {
						window.opener.FLBuilder._updateNode( FLBuilderGlobalNodeId );
					}
				}

				window.close();
			}
			else {

				if ( FLBuilder._exitUrl ) {
					href = FLBuilder._exitUrl;
				}
				else {
					href = href.replace( '?fl_builder&', '?' );
					href = href.replace( '?fl_builder', '' );
					href = href.replace( '&fl_builder', '' );
				}

				window.location.href = href;
			}
		},

		/**
		 * Allow the editing session to end but don't redirect to any url.
		 *
		 * @since 2.0
		 * @return void
		 */
		_exitWithoutRefresh: function() {
			var href = window.location.href;

			if ( FLBuilderConfig.isUserTemplate && typeof window.opener != 'undefined' && window.opener ) {

				if ( typeof window.opener.FLBuilder != 'undefined' ) {
					if ( 'undefined' === typeof FLBuilderGlobalNodeId ) {
						window.opener.FLBuilder._updateLayout();
					} else {
						window.opener.FLBuilder._updateNode( FLBuilderGlobalNodeId );
					}
				}

				window.close();
			}
			else {
				FLBuilder.triggerHook('endEditingSession');
			}
		},

		/* Tools Actions
		----------------------------------------------------------*/

		/**
		 * Duplicates the current post and builder layout.
		 *
		 * @since 1.0
		 * @access private
		 * @method _duplicateLayoutClicked
		 */
		_duplicateLayoutClicked: function()
		{
			FLBuilder.showAjaxLoader();

			FLBuilder.ajax({
				action: 'duplicate_post'
			}, FLBuilder._duplicateLayoutComplete);
		},

		/**
		 * Redirects the user to the post edit screen of a
		 * duplicated post when duplication is complete.
		 *
		 * @since 1.0
		 * @access private
		 * @method _duplicatePageComplete
		 * @param {Number} The ID of the duplicated post.
		 */
		_duplicateLayoutComplete: function(response)
		{
			var adminUrl = FLBuilderConfig.adminUrl;

			window.location.href = adminUrl + 'post.php?post='+ response +'&action=edit';
		},

		/* Layout Settings
		----------------------------------------------------------*/

		/**
		 * Shows the layout settings lightbox when the layout
		 * settings button is clicked.
		 *
		 * @since 1.7
		 * @access private
		 * @method _layoutSettingsClicked
		 */
		_layoutSettingsClicked: function()
		{
			FLBuilderSettingsForms.render( {
				id        : 'layout',
				className : 'fl-builder-layout-settings',
				settings  : FLBuilderSettingsConfig.settings.layout
			}, function() {
				FLBuilder._layoutSettingsInitCSS();
			} );
		},

		/**
		 * Initializes custom layout CSS for live preview.
		 *
		 * @since 1.7
		 * @access private
		 * @method _layoutSettingsInitCSS
		 */
		_layoutSettingsInitCSS: function()
		{
			var css = $( '.fl-builder-settings #fl-field-css textarea:not(.ace_text-input)' );

			css.on( 'change', FLBuilder._layoutSettingsCSSChanged );

			FLBuilder._layoutSettingsCSSCache = css.val();
		},

		/**
		 * Sets a timeout for throttling custom layout CSS changes.
		 *
		 * @since 1.7
		 * @access private
		 * @method _layoutSettingsCSSChanged
		 */
		_layoutSettingsCSSChanged: function()
		{
			if ( FLBuilder._layoutSettingsCSSTimeout ) {
				clearTimeout( FLBuilder._layoutSettingsCSSTimeout );
			}

			FLBuilder._layoutSettingsCSSTimeout = setTimeout( $.proxy( FLBuilder._layoutSettingsCSSDoChange, this ), 600 );
		},

		/**
		 * Updates the custom layout CSS when changes are made in the editor.
		 *
		 * @since 1.7
		 * @access private
		 * @method _layoutSettingsCSSDoChange
		 */
		_layoutSettingsCSSDoChange: function()
		{
			var form	 = $( '.fl-builder-settings' ),
				textarea = $( this ),
				field    = textarea.parents( '#fl-field-css' );

			if ( field.find( '.ace_error' ).length > 0 ) {
				return;
			}
			else if ( form.hasClass( 'fl-builder-layout-settings' ) ) {
				$( '#fl-builder-layout-css' ).html( textarea.val() );
			}
			else {
				$( '#fl-builder-global-css' ).html( textarea.val() );
			}

			FLBuilder._layoutSettingsCSSTimeout = null;
		},

		/**
		 * Saves the layout settings when the save button is clicked.
		 *
		 * @since 1.7
		 * @access private
		 * @method _saveLayoutSettingsClicked
		 */
		_saveLayoutSettingsClicked: function()
		{
			var form     = $( this ).closest( '.fl-builder-settings' ),
				data     = form.serializeArray(),
				settings = {},
				i        = 0;

			for( ; i < data.length; i++) {
				settings[ data[ i ].name ] = data[ i ].value;
			}

			FLBuilder.showAjaxLoader();
			FLBuilder._lightbox.close();
			FLBuilder._layoutSettingsCSSCache = null;

			FLBuilder.ajax( {
				action: 'save_layout_settings',
				settings: settings
			}, function() {
				FLBuilder.triggerHook( 'didSaveLayoutSettingsComplete', settings );
				FLBuilder._updateLayout();
			} );
		},

		/**
		 * Reverts changes made when the cancel button for the layout
		 * settings has been clicked.
		 *
		 * @since 1.7
		 * @access private
		 * @method _cancelLayoutSettingsClicked
		 */
		_cancelLayoutSettingsClicked: function()
		{
			var form = $( '.fl-builder-settings' );

			if ( form.hasClass( 'fl-builder-layout-settings' ) ) {
				$( '#fl-builder-layout-css' ).html( FLBuilder._layoutSettingsCSSCache );
			}
			else {
				$( '#fl-builder-global-css' ).html( FLBuilder._layoutSettingsCSSCache );
			}

			FLBuilder._layoutSettingsCSSCache = null;
		},

		/* Global Settings
		----------------------------------------------------------*/

		/**
		 * Shows the global builder settings lightbox when the global
		 * settings button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _globalSettingsClicked
		 */
		_globalSettingsClicked: function()
		{
			FLBuilderSettingsForms.render( {
				id        : 'global',
				className : 'fl-builder-global-settings',
				settings  : FLBuilderSettingsConfig.settings.global
			}, function() {
				FLBuilder._layoutSettingsInitCSS();
			} );
		},

		/**
		 * Saves the global settings when the save button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _saveGlobalSettingsClicked
		 */
		_saveGlobalSettingsClicked: function()
		{
			var form     = $(this).closest('.fl-builder-settings'),
				valid    = form.validate().form(),
				settings = FLBuilder._getSettings( form );

			if(valid) {

				FLBuilder.showAjaxLoader();
				FLBuilder._layoutSettingsCSSCache = null;

				FLBuilder.ajax({
					action: 'save_global_settings',
					settings: settings
				}, FLBuilder._saveGlobalSettingsComplete);

				FLBuilder._lightbox.close();
			}
		},

		/**
		 * Saves the global settings when the save button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _saveGlobalSettingsComplete
		 * @param {String} response
		 */
		_saveGlobalSettingsComplete: function( response )
		{
			FLBuilderConfig.global = JSON.parse( response );

			FLBuilder.triggerHook( 'didSaveGlobalSettingsComplete', FLBuilderConfig.global );

			FLBuilder._updateLayout();
		},

		/* Template Selector
		----------------------------------------------------------*/

		/**
		 * Shows the template selector when the builder is launched
		 * if the current layout is empty.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initTemplateSelector
		 */
		_initTemplateSelector: function()
		{
			var rows = $(FLBuilder._contentClass).find('.fl-row'),
				layoutHasContent = ( rows.length > 0 );

			if( ! layoutHasContent ) {
				FLBuilder.ContentPanel.show('modules');
			}
		},

		/**
		* Show options for inserting or appending a template when a template is selected.
		* This logic was moved from `_templateClicked` to unbind it from the specific event.
		*
		* @since 2.0
		* @access private
		* @method _requestTemplateInsert
		*/
		_requestTemplateInsert: function(index, type) {

			// if there are existing rows in the layout
			if( FLBuilder.layoutHasContent() ) {

				// If the template is blank, no need to ask
				if(index == 0) {
					if(confirm(FLBuilderStrings.changeTemplateMessage)) {
						FLBuilder._lightbox._node.hide();
						FLBuilder._applyTemplate(0, false, type);
					}
				}
				// present options Replace or Append
				else {
					FLBuilder._selectedTemplateId = index;
					FLBuilder._selectedTemplateType = type;
					FLBuilder._showTemplateActions();
					FLBuilder._lightbox._node.hide();
				}
			}
			// if there are no rows, just insert the template.
			else {
				FLBuilder._applyTemplate(index, false, type);
			}
		},

		/**
		 * Shows the actions lightbox for replacing and appending templates.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _showTemplateActions
		 */
		_showTemplateActions: function()
		{
			var buttons = [];

			buttons[ 10 ] = {
				'key': 'template-replace',
				'label': FLBuilderStrings.templateReplace
			};

			buttons[ 20 ] = {
				'key': 'template-append',
				'label': FLBuilderStrings.templateAppend
			};

			FLBuilder._showActionsLightbox({
				'className': 'fl-builder-template-actions',
				'title': FLBuilderStrings.actionsLightboxTitle,
				'buttons': buttons
			});
		},

		/**
		 * Replaces the current layout with a template when the replace
		 * button is clicked.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _templateReplaceClicked
		 */
		_templateReplaceClicked: function()
		{
			if(confirm(FLBuilderStrings.changeTemplateMessage)) {
				FLBuilder._actionsLightbox.close();
				FLBuilder._applyTemplate(FLBuilder._selectedTemplateId, false, FLBuilder._selectedTemplateType);
			}
		},

		/**
		 * Append a template to the current layout when the append
		 * button is clicked.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _templateAppendClicked
		 */
		_templateAppendClicked: function()
		{
			FLBuilder._actionsLightbox.close();
			FLBuilder._applyTemplate(FLBuilder._selectedTemplateId, true, FLBuilder._selectedTemplateType);
		},

		/**
		 * Shows the template selector when the cancel button of
		 * the template actions lightbox is clicked.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _templateCancelClicked
		 */
		_templateCancelClicked: function()
		{
			FLBuilder.triggerHook( 'showContentPanel' );
		},

		/**
		 * Applys a template to the current layout by either appending
		 * it or replacing the current layout with it.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _applyTemplate
		 * @param {Number} id The template id.
		 * @param {Boolean} append Whether the new template should be appended or not.
		 * @param {String} type The type of template. Either core or user.
		 */
		_applyTemplate: function(id, append, type)
		{
			append  = typeof append === 'undefined' || !append ? '0' : '1';
			type    = typeof type === 'undefined' ? 'core' : type;

			FLBuilder._lightbox.close();
			FLBuilder.showAjaxLoader();

			if(type == 'core') {

				FLBuilder.ajax({
					action: 'apply_template',
					template_id: id,
					append: append
				}, FLBuilder._applyTemplateComplete);
			}
			else {

				FLBuilder.ajax({
					action: 'apply_user_template',
					template_id: id,
					append: append
				}, FLBuilder._applyUserTemplateComplete);
			}

			FLBuilder.triggerHook('didApplyTemplate');
		},

		/**
		 * Callback for when applying a template completes.

		 * @since 2.0
		 * @access private
		 * @method _applyTemplateComplete
		 * @param  {String} response
		 */
		_applyTemplateComplete:  function( response )
		{
			var data = JSON.parse( response );

			FLBuilder._renderLayout( data.layout );
			FLBuilder.triggerHook( 'didApplyTemplateComplete', data.config );
		},

		/**
		 * Callback for when applying a user template completes.

		 * @since 1.9.5
		 * @access private
		 * @method _applyUserTemplateComplete
		 * @param  {string} response
		 */
		_applyUserTemplateComplete: function( response )
		{
			var data = JSON.parse( response );

			if ( null !== data.layout_css ) {
				$( '#fl-builder-layout-css' ).html( data.layout_css );
			}

			FLBuilder._renderLayout( data.layout );
			FLBuilder.triggerHook( 'didApplyTemplateComplete', data.config );
		},

		/* User Template Settings
		----------------------------------------------------------*/

		/**
		 * Shows the settings for saving a user defined template
		 * when the save template button is clicked.
		 *
		 * @since 1.1.3
		 * @access private
		 * @method _saveUserTemplateClicked
		 */
		_saveUserTemplateClicked: function()
		{
			FLBuilderSettingsForms.render( {
				id        : 'user_template',
				className : 'fl-builder-user-template-settings',
				rules 	  : {
					name: {
						required: true
					}
				}
			} );
		},

		/**
		 * Saves user template settings when the save button is clicked.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _saveUserTemplateSettings
		 */
		_saveUserTemplateSettings: function()
		{
			var form     = $(this).closest('.fl-builder-settings'),
				valid    = form.validate().form(),
				settings = FLBuilder._getSettings(form);

			if(valid) {

				FLBuilder.ajax({
					action: 'save_user_template',
					settings: settings
				}, FLBuilder._saveUserTemplateSettingsComplete);

				FLBuilder._lightbox.close();
			}
		},

		/**
		 * Shows a success alert when user template settings have saved.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _saveUserTemplateSettingsComplete
		 */
		_saveUserTemplateSettingsComplete: function(data)
		{
			if ( !data ) return;
			var data = JSON.parse(data);

			FLBuilderConfig.contentItems.template.push(data);
			FLBuilder.triggerHook('contentItemsChanged');
		},

		/**
		 * Callback for when a user clicks a user defined template in
		 * the template selector.
		 *
		 * @since 1.1.3
		 * @access private
		 * @method _userTemplateClicked
		 */
		_userTemplateClicked: function()
		{
			var id = $(this).attr('data-id');

			if($(FLBuilder._contentClass).children('.fl-row').length > 0) {

				if(id == 'blank') {
					if(confirm(FLBuilderStrings.changeTemplateMessage)) {
						FLBuilder._lightbox._node.hide();
						FLBuilder._applyTemplate('blank', false, 'user');
					}
				}
				else {
					FLBuilder._selectedTemplateId = id;
					FLBuilder._selectedTemplateType = 'user';
					FLBuilder._showTemplateActions();
					FLBuilder._lightbox._node.hide();
				}
			}
			else {
				FLBuilder._applyTemplate(id, false, 'user');
			}
		},

		/**
		 * Launches the builder in a new tab to edit a user
		 * defined template when the edit link is clicked.
		 *
		 * @since 1.1.3
		 * @access private
		 * @method _editUserTemplateClicked
		 * @param {Object} e The event object.
		 */
		_editUserTemplateClicked: function(e)
		{
			e.preventDefault();
			e.stopPropagation();

			window.open($(this).attr('href'));
		},

		/**
		 * Deletes a user defined template when the delete link is clicked.
		 *
		 * @since 1.1.3
		 * @access private
		 * @method _deleteUserTemplateClicked
		 * @param {Object} e The event object.
		 */
		_deleteUserTemplateClicked: function(e)
		{
			var template = $( this ).closest( '.fl-user-template' ),
				id		 = template.attr( 'data-id' ),
				all		 = $( '.fl-user-template[data-id=' + id + ']' ),
				parent   = null,
				index    = null,
				i        = null,
				item     = null;

			if ( confirm( FLBuilderStrings.deleteTemplate ) ) {

				FLBuilder.ajax( {
					action: 'delete_user_template',
					template_id: id
				} );

				// Remove the item from library
				for(i in FLBuilderConfig.contentItems.template) {
					item = FLBuilderConfig.contentItems.template[i];
					if (item.postId == id) {
						index = i;
					}
				}
				if (!_.isNull(index)) {
					FLBuilderConfig.contentItems.template.splice(index, 1);
					FLBuilder.triggerHook('contentItemsChanged');
				}
			}

			e.stopPropagation();
		},

		/* Help Actions
		----------------------------------------------------------*/

		/**
		 * Opens a new window with the knowledge base URL when the
		 * view knowledge base button is clicked.
		 *
		 * @since 1.4.9
		 * @access private
		 * @method _viewKnowledgeBaseClicked
		 */
		_viewKnowledgeBaseClicked: function()
		{
			window.open( FLBuilderConfig.help.knowledge_base_url );
		},

		/**
		 * Opens a new window with the forums URL when the
		 * visit forums button is clicked.
		 *
		 * @since 1.4.9
		 * @access private
		 * @method _visitForumsClicked
		 */
		_visitForumsClicked: function()
		{
			window.open( FLBuilderConfig.help.forums_url );
		},

		/* Help Tour
		----------------------------------------------------------*/

		/**
		 * Shows the help tour or template selector when the builder
		 * is launched.
		 *
		 * @since 1.4.9
		 * @access private
		 * @method _showTourOrTemplates
		 */
		_showTourOrTemplates: function()
		{
			if ( ! FLBuilderConfig.simpleUi && ! FLBuilderConfig.isUserTemplate ) {

				if ( FLBuilderConfig.help.tour && FLBuilderConfig.newUser ) {
					FLBuilder._showTourLightbox();
				}
				else {
					FLBuilder._initTemplateSelector();
				}
			}
		},

		/**
		 * Shows the actions lightbox with a welcome message for new
		 * users asking if they would like to take the tour.
		 *
		 * @since 1.4.9
		 * @access private
		 * @method _showTourLightbox
		 */
		_showTourLightbox: function()
		{
			var template = wp.template( 'fl-tour-lightbox' );

			FLBuilder._actionsLightbox.open( template() );
		},

		/**
		 * Closes the actions lightbox and shows the template selector
		 * if a new user declines the tour.
		 *
		 * @since 1.4.9
		 * @access private
		 * @method _noTourButtonClicked
		 */
		_noTourButtonClicked: function()
		{
			FLBuilder._actionsLightbox.close();
			FLBuilder._initTemplateSelector();
		},

		/**
		 * Closes the actions lightbox and starts the tour when a new user
		 * decides to take the tour.
		 *
		 * @since 1.4.9
		 * @access private
		 * @method _yesTourButtonClicked
		 */
		_yesTourButtonClicked: function()
		{
			FLBuilder._actionsLightbox.close();
			FLBuilderTour.start();
		},

		/**
		 * Starts the help tour.
		 *
		 * @since 1.4.9
		 * @access private
		 * @method _startHelpTour
		 */
		_startHelpTour: function()
		{
			FLBuilder._actionsLightbox.close();
			FLBuilderTour.start();
		},

		/* Layout
		----------------------------------------------------------*/

		/**
		 * Shows a message to drop a row or module to get started
		 * if the layout is empty.
		 *
		 * @since 1.0
		 * @access private
		 * @method _setupEmptyLayout
		 */
		_setupEmptyLayout: function()
		{
			var content = $(FLBuilder._contentClass);

			if ( FLBuilderConfig.isUserTemplate && 'module' == FLBuilderConfig.userTemplateType ) {
				return;
			}
			else {
				content.removeClass('fl-builder-empty');
				content.find('.fl-builder-empty-message').remove();

				if ( ! content.find( '.fl-row, .fl-builder-block' ).length ) {
					content.addClass('fl-builder-empty');
					content.append('<span class="fl-builder-empty-message">'+ FLBuilderStrings.emptyMessage +'</span>');
					FLBuilder._initSortables();
				}
			}
		},

		/**
		 * Sends an AJAX request to re-render a single node.
		 *
		 * @since 2.0
		 * @access private
		 * @method _updateNode
		 * @param {String} nodeId
		 * @param {Function} callback
		 */
		_updateNode: function( nodeId, callback )
		{
			if ( ! $( '.fl-node-' + nodeId ).length ) {
				return;
			}

			FLBuilder._showNodeLoading( nodeId );

			FLBuilder.ajax( {
				action  : 'render_node',
				node_id : nodeId
			}, function( response ) {
				FLBuilder._renderLayout( JSON.parse( response ), callback );
			}.bind( this ) );
		},

		/**
		 * Sends an AJAX request to render the layout and is typically
		 * used as a callback to many of the builder's save operations.
		 *
		 * @since 1.0
		 * @access private
		 * @method _updateLayout
		 */
		_updateLayout: function()
		{
			FLBuilder.showAjaxLoader();

			FLBuilder.ajax({
				action: 'render_layout'
			}, FLBuilder._renderLayout);
		},

		/**
		 * Removes the current layout and renders a new layout using
		 * the provided data. Will render a node instead of the layout
		 * if data.partial is true.
		 *
		 * @since 1.0
		 * @access private
		 * @method _renderLayout
		 * @param {Object} data The layout data. May also be a JSON encoded string.
		 * @param {Function} callback A function to call when the layout has finished rendering.
		 */
		_renderLayout: function( data, callback )
		{
			FLBuilder._layout = new FLBuilderAJAXLayout( data, callback );
		},

		/**
		 * Called by the layout's JavaScript file once it's loaded
		 * to finish rendering the layout.
		 *
		 * @since 1.0
		 * @access private
		 * @method _renderLayoutComplete
		 */
		_renderLayoutComplete: function()
		{
			if ( FLBuilder._layout ) {
				FLBuilder._layout._complete();
				FLBuilder._layout = null;
			}
		},

		/**
		 * Trigger the resize event on the window so elements
		 * in the layout that rely on JavaScript know to resize.
		 *
		 * @since 1.0
		 * @access private
		 * @method _resizeLayout
		 */
		_resizeLayout: function()
		{
			$(window).trigger('resize');

			if(typeof YUI !== 'undefined') {
				YUI().use('node-event-simulate', function(Y) {
					Y.one(window).simulate("resize");
				});
			}
		},

		/**
		 * Checks to see if any rows exist in the layout, or if it is blank.
		 *
		 * @since 2.0
		 * @method layoutHasContent
		 * @return {Boolean}
		 */
		layoutHasContent: function()
		{
            if( $(FLBuilder._contentClass).children('.fl-row').length > 0) {
                return true;
            } else {
                return false;
            }
        },

		/**
		 * Initializes MediaElements.js audio and video players.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initMediaElements
		 */
		_initMediaElements: function()
		{
			var settings = {};

			if(typeof $.fn.mediaelementplayer != 'undefined') {

				if(typeof _wpmejsSettings !== 'undefined') {
					settings.pluginPath = _wpmejsSettings.pluginPath;
				}

				$('.wp-audio-shortcode, .wp-video-shortcode').not('.mejs-container').mediaelementplayer(settings);
			}
		},

		/* Generic Drag and Drop
		----------------------------------------------------------*/

		/**
		 * Inserts drop targets for nodes such as rows, columns
		 * and column groups since making those all sortables
		 * makes sorting really jumpy.
		 *
		 * @since 1.9
		 * @access private
		 * @method _initDropTargets
		 */
		_initDropTargets: function()
		{
			var notGlobal = 'row' == FLBuilderConfig.userTemplateType ? '' : ':not(.fl-node-global)',
				rows      = $( FLBuilder._contentClass + ' .fl-row' ),
				row       = null,
				groups    = $( FLBuilder._contentClass + ' .fl-row' + notGlobal ).find( '.fl-col-group' ),
				group     = null,
				cols      = null,
				i         = 0;

			// Remove old drop targets.
			$( '.fl-col-drop-target' ).remove();
			$( '.fl-col-group-drop-target' ).remove();
			$( '.fl-row-drop-target' ).remove();

			// Row drop targets.
			$( FLBuilder._contentClass ).append( '<div class="fl-drop-target fl-row-drop-target"></div>' );
			rows.prepend( '<div class="fl-drop-target fl-row-drop-target"></div>' );
			rows.append( '<div class="fl-drop-target fl-drop-target-last fl-row-drop-target fl-row-drop-target-last"></div>' );

			// Add group drop targets to empty rows.
			for ( ; i < rows.length; i++ ) {

				row = rows.eq( i );

				if ( 0 === row.find( '.fl-col-group' ).length ) {
					row.find( '.fl-row-content' ).prepend( '<div class="fl-drop-target fl-col-group-drop-target"></div>' );
				}
			}

			// Loop through the column groups.
			for ( i = 0; i < groups.length; i++ ) {

				group = groups.eq( i );
				cols  = group.find( '> .fl-col' );

				// Column group drop targets.
				if ( ! group.hasClass( 'fl-col-group-nested' ) ) {
					group.append( '<div class="fl-drop-target fl-col-group-drop-target"></div>' );
					group.append( '<div class="fl-drop-target fl-drop-target-last fl-col-group-drop-target fl-col-group-drop-target-last"></div>' );
				}

				// Column drop targets.
				cols.append( '<div class="fl-drop-target fl-col-drop-target"></div>' );
				cols.append( '<div class="fl-drop-target fl-drop-target-last fl-col-drop-target fl-col-drop-target-last"></div>' );
			}
		},

		/**
		 * Returns a helper element for a drag operation.
		 *
		 * @since 1.0
		 * @access private
		 * @method _blockDragHelper
		 * @param {Object} e The event object.
		 * @param {Object} item The item being dragged.
		 * @return {Object} The helper element.
		 */
		_blockDragHelper: function (e, item)
		{
			var helper = item.clone();

			item.clone().insertAfter(item);
			helper.addClass('fl-builder-block-drag-helper');

			return helper;
		},

		/**
		 * Initializes a drag operation.
		 *
		 * @since 1.0
		 * @access private
		 * @method _blockDragInit
		 * @param {Object} e The event object.
		 */
		_blockDragInit: function( e )
		{
			var target        = $( e.currentTarget ),
				node          = null,
				scrollTop     = $( window ).scrollTop(),
				initialPos    = 0;

			// Set the _dragEnabled flag.
			FLBuilder._dragEnabled = true;

			// Save the initial scroll position.
			FLBuilder._dragInitialScrollTop = scrollTop;

			// Get the node to scroll to once the node highlights have affected the body height.
			if ( target.closest( '[data-node]' ).length > 0 ) {

				// Set the node to a node instance being dragged.
				node = target.closest( '[data-node]' );

				// Mark this node as initialized for dragging.
				node.addClass( 'fl-node-drag-init' );
			}
			else if ( target.hasClass( 'fl-builder-block' ) ) {

				// Set the node to the first visible row instance.
				$( '.fl-row' ).each( function() {
					if ( node === null && $( this ).offset().top - scrollTop > 0 ) {
						node = $( this );
					}
				} );
			}

			// Get the initial scroll position of the node.
			if ( node !== null ) {
				initialPos = node.offset().top - scrollTop;
			}

			// Setup the UI for dragging.
			FLBuilder._highlightRowsAndColsForDrag( target );
			FLBuilder._adjustColHeightsForDrag();
			FLBuilder._disableGlobalRows();
			FLBuilder._destroyOverlayEvents();
			FLBuilder._removeAllOverlays();
			FLBuilder._initSortables();
			$( 'body' ).addClass( 'fl-builder-dragging' );
			$( '.fl-builder-empty-message' ).hide();
			$( '.fl-sortable-disabled' ).removeClass( 'fl-sortable-disabled' );

			// Scroll to the node that is dragging.
			if ( initialPos > 0 ) {
				scrollTo( 0, node.offset().top - initialPos );
			}

			FLBuilder.triggerHook('didInitDrag');
		},

		/**
		 * Callback that fires when dragging starts.
		 *
		 * @since 1.0
		 * @access private
		 * @method _blockDragStart
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_blockDragStart: function(e, ui)
		{

			// Let the builder know dragging has started.
			FLBuilder._dragging = true;

			// Removed the drag init class as we're done with that.
			$( '.fl-node-drag-init' ).removeClass( 'fl-node-drag-init' );

			FLBuilder.triggerHook('didStartDrag');
		},

		/**
		 * Callback that fires when an element that is being
		 * dragged is sorted.
		 *
		 * @since 1.0
		 * @access private
		 * @method _blockDragSort
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_blockDragSort: function(e, ui)
		{
			var parent = ui.placeholder.parent(),
				title  = FLBuilderStrings.insert;

			// Prevent sorting?
			if ( FLBuilder._blockPreventSort( ui.item, parent ) ) {
				return;
			}

			// Find the placeholder title.
			if(parent.hasClass('fl-col-content')) {
				if(ui.item.hasClass('fl-builder-block-row')) {
					title = ui.item.find('.fl-builder-block-title').text();
				}
				else if(ui.item.hasClass('fl-col-sortable-proxy-item')) {
					title = FLBuilderStrings.column;
				}
				else if(ui.item.hasClass('fl-builder-block-module')) {
					title = ui.item.find('.fl-builder-block-title').text();
				}
				else if(ui.item.hasClass('fl-builder-block-saved-module') || ui.item.hasClass('fl-builder-block-module-template')) {
					title = ui.item.find('.fl-builder-block-title').text();
				}
				else {
					title = ui.item.attr('data-name');
				}
			}
			else if(parent.hasClass('fl-col-drop-target')) {
				title = '';
			}
			else if (parent.hasClass('fl-col-group-drop-target')) {
				title = '';
			}
			else if(parent.hasClass('fl-row-drop-target')) {
				if(ui.item.hasClass('fl-builder-block-row')) {
					title = ui.item.find('.fl-builder-block-title').text();
				}
				else if(ui.item.hasClass('fl-builder-block-saved-row')) {
					title = ui.item.find('.fl-builder-block-title').text();
				}
				else if(ui.item.hasClass('fl-row-sortable-proxy-item')) {
					title = FLBuilderStrings.row;
				}
				else {
					title = FLBuilderStrings.newRow;
				}
			}

			// Set the placeholder title.
			ui.placeholder.html(title);

			// Add the global class?
			if ( ui.item.hasClass( 'fl-node-global' ) ||
				 ui.item.hasClass( 'fl-builder-block-global' ) ||
				 $( '.fl-node-dragging' ).hasClass( 'fl-node-global' )
			) {
				ui.placeholder.addClass( 'fl-builder-drop-zone-global' );
			}
			else {
				ui.placeholder.removeClass( 'fl-builder-drop-zone-global' );
			}
		},

		/**
		 * Callback that fires when an element that is being
		 * dragged position changes.
		 *
		 * What we're doing here keeps it from appearing jumpy when draging
		 * between columns. Without this you'd see the placeholder jump into
		 * a column position briefly when you didn't intend for it to.
		 *
		 * @since 1.9
		 * @access private
		 * @method _blockDragChange
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_blockDragChange: function( e, ui )
		{
			ui.placeholder.css( 'opacity', '0' );
			ui.placeholder.animate( { 'opacity': '1' }, 100 );
		},

		/**
		 * Prevents sorting of items that shouldn't be sorted into
		 * specific areas.
		 *
		 * @since 1.9
		 * @access private
		 * @method _blockPreventSort
		 * @param {Object} item The item being sorted.
		 * @param {Object} parent The new parent.
		 */
		_blockPreventSort: function( item, parent )
		{
			var prevent     = false,
				isRowBlock  = item.hasClass( 'fl-builder-block-row' ),
				isCol       = item.hasClass( 'fl-col-sortable-proxy-item' ),
				isParentCol = parent.hasClass( 'fl-col-content' ),
				isColTarget = parent.hasClass( 'fl-col-drop-target' ),
				group       = parent.parents( '.fl-col-group:not(.fl-col-group-nested)' ),
				nestedGroup = parent.parents( '.fl-col-group-nested' );

			// Prevent columns in nested columns.
			if ( ( isRowBlock || isCol ) && isParentCol && nestedGroup.length > 0 ) {
				prevent = true;
			}

			// Prevent 1 column from being nested in an empty column.
			if ( isParentCol && ! parent.find( '.fl-module, .fl-col' ).length ) {

				if ( isRowBlock && '1-col' == item.data( 'cols' ) ) {
					prevent = true;
				}
				else if ( isCol ) {
					prevent = true;
				}
			}

			// Prevent 5 or 6 columns from being nested.
			if ( isRowBlock && isParentCol && $.inArray( item.data( 'cols' ), [ '5-cols', '6-cols' ] ) > -1 ) {
				prevent = true;
			}

			// Prevent columns with nested columns from being dropped in nested columns.
			if ( isCol && $( '.fl-node-dragging' ).find( '.fl-col-group-nested' ).length > 0 ) {

				if ( isParentCol || ( isColTarget && nestedGroup.length > 0 ) ) {
					prevent = true;
				}
			}

			// Prevent more than 12 columns.
			if ( isColTarget && group.length > 0 && 0 === nestedGroup.length && group.find( '> .fl-col:visible' ).length > 11 ) {
				prevent = true;
			}

			// Prevent more than 4 nested columns.
			if ( isColTarget && nestedGroup.length > 0 && nestedGroup.find( '.fl-col:visible' ).length > 3 ) {
				prevent = true;
			}

			// Add the disabled class if we are preventing a sort.
			if ( prevent ) {
				parent.addClass( 'fl-sortable-disabled' );
			}

			return prevent;
		},

		/**
		 * Cleans up when a drag operation has stopped.
		 *
		 * @since 1.0
		 * @access private
		 * @method _blockDragStop
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_blockDragStop: function( e, ui )
		{
			var scrollTop  = $( window ).scrollTop(),
				parent     = ui.item.parent(),
				initialPos = null;

			// Get the node to scroll to once removing the node highlights affects the body height.
			if ( parent.hasClass( 'fl-drop-target' ) && parent.closest( '[data-node]' ).length ) {
				parent = parent.closest( '[data-node]' );
				initialPos = parent.offset().top - scrollTop;
			}
			else {
				initialPos = parent.offset().top - scrollTop;
			}

			// Show the panel if a block was dropped back in.
			if ( parent.hasClass( 'fl-builder-blocks-section-content' ) ) {
				FLBuilder._showPanel();
			}

			// Finish dragging.
			FLBuilder._dragEnabled = false;
			FLBuilder._dragging = false;
			FLBuilder._bindOverlayEvents();
			FLBuilder._highlightEmptyCols();
			FLBuilder._enableGlobalRows();
			FLBuilder._setupEmptyLayout();
			$( 'body' ).removeClass( 'fl-builder-dragging' );

			// Scroll the page back to where it was.
			scrollTo( 0, parent.offset().top - initialPos );

			FLBuilder.triggerHook('didStopDrag');
		},

		/**
		 * Cleans up when a drag operation has canceled.
		 *
		 * @since 1.0
		 * @access private
		 * @method _blockDragCancel
		 */
		_blockDragCancel: function()
		{
			if ( FLBuilder._dragEnabled && ! FLBuilder._dragging ) {
				FLBuilder._dragEnabled = false;
				FLBuilder._dragging = false;
				FLBuilder._bindOverlayEvents();
				FLBuilder._highlightEmptyCols();
				FLBuilder._enableGlobalRows();
				FLBuilder._setupEmptyLayout();
				$( 'body' ).removeClass( 'fl-builder-dragging' );
				$( '.fl-node-drag-init' ).removeClass( 'fl-node-drag-init' );
				$( '.fl-node-dragging' ).removeClass( 'fl-node-dragging' );
				scrollTo( 0, FLBuilder._dragInitialScrollTop );
			}
		},

		/**
		 * Reorders a node within its parent.
		 *
		 * @since 1.9
		 * @access private
		 * @method _reorderNode
		 * @param {String} nodeId The node ID of the node.
		 * @param {Number} position The new position.
		 */
		_reorderNode: function( nodeId, position )
		{
			FLBuilder.ajax( {
				action: 'reorder_node',
				node_id: nodeId,
				position: position
			} );
		},

		/**
		 * Moves a node to a new parent.
		 *
		 * @since 1.9
		 * @access private
		 * @method _moveNode
		 * @param {String} newParent The node ID of the new parent.
		 * @param {String} nodeId The node ID of the node.
		 * @param {Number} position The new position.
		 */
		_moveNode: function( newParent, nodeId, position )
		{
			FLBuilder.ajax({
				action: 'move_node',
				new_parent: newParent,
				node_id: nodeId,
				position: position
			});
		},

		/**
		 * Removes all node overlays and hides any tooltip helpies.
		 *
		 * @since 1.0
		 * @access private
		 * @method _removeAllOverlays
		 */
		_removeAllOverlays: function()
		{
			FLBuilder._removeRowOverlays();
			FLBuilder._removeColOverlays();
			FLBuilder._removeColHighlightGuides();
			FLBuilder._removeModuleOverlays();
			FLBuilder._hideTipTips();
			FLBuilder._closeAllSubmenus();
		},

		/**
		 * Appends a node action overlay to the layout.
		 *
		 * @since 1.6.3.3
		 * @access private
		 * @method _appendOverlay
		 * @param {Object} node A jQuery reference to the node this overlay is associated with.
		 * @param {Object} template A rendered wp.template.
		 * @return {Object} The overlay element.
		 */
		_appendOverlay: function( node, template )
		{
			var overlayPos 	= 0,
				overlay 	= null,
				isRow		= node.hasClass( 'fl-row' ),
				content		= isRow ? node.find( '> .fl-row-content-wrap' ) : node.find( '> .fl-node-content' ),
				margins 	= {
					'top' 		: parseInt( content.css( 'margin-top' ), 10 ),
					'bottom' 	: parseInt( content.css( 'margin-bottom' ), 10 )
				};

			// Append the template.
			node.append( template );

			// Add the active class to the node.
			node.addClass( 'fl-block-overlay-active' );

			// Init TipTips
			FLBuilder._initTipTips();

			// Get a reference to the overlay.
			overlay = node.find( '> .fl-block-overlay' );

			// Adjust the overlay positions to account for negative margins.
			if ( margins.top < 0 ) {
				overlayPos = parseInt( overlay.css( 'top' ), 10 );
				overlayPos = isNaN( overlayPos ) ? 0 : overlayPos;
				overlay.css( 'top', ( margins.top + overlayPos ) + 'px' );
			}
			if ( margins.bottom < 0 ) {
				overlayPos = parseInt( overlay.css( 'bottom' ), 10 );
				overlayPos = isNaN( overlayPos ) ? 0 : overlayPos;
				overlay.css( 'bottom', ( margins.bottom + overlayPos ) + 'px' );
			}

			return overlay;
		},

		/**
		 * Builds the overflow menu for an overlay if necessary.
		 *
		 * @since 1.9
		 * @access private
		 * @method _buildOverlayOverflowMenu
		 * @param {Object} overlay The overlay object.
		 */
		_buildOverlayOverflowMenu: function( overlay )
		{
			var actions       = overlay.find( '.fl-block-overlay-actions' ),
				original      = actions.data( 'original' ),
				actionsWidth  = 0,
				items         = null,
				itemsWidth    = 0,
				item          = null,
				i             = 0,
				visibleItems  = [],
				overflowItems = [],
				menuData      = [],
				template	  = wp.template( 'fl-overlay-overflow-menu' );

			// Use the original copy if we have one.
			if ( undefined != original ) {
				actions.after( original );
				actions.remove();
				actions = original;
			}

			// Save a copy of the original actions.
			actions.data( 'original', actions.clone() );

			// Get the actions width and items. Subtract any padding plus 2px (8px)
			actionsWidth  = Math.floor(actions[0].getBoundingClientRect().width) - 8;
			items         = actions.find( ' > i, > span.fl-builder-has-submenu' );

			// Find visible and overflow items.
			for( ; i < items.length; i++ ) {

				item        = items.eq( i );
				itemsWidth += Math.floor(item[0].getBoundingClientRect().width);

				if ( itemsWidth > actionsWidth ) {
					overflowItems.push( item );
					item.remove();
				}
				else {
					visibleItems.push( item );
				}
			}

			// Build the menu if we have overflow items.
			if ( overflowItems.length > 0 ) {

				overflowItems.unshift( visibleItems.pop().remove() );

				for( i = 0; i < overflowItems.length; i++ ) {

					if ( overflowItems[ i ].is( '.fl-builder-has-submenu' ) ) {
						menuData.push( {
							type    : 'submenu',
							label   : overflowItems[ i ].find( '.fa' ).data( 'title' ),
							submenu : overflowItems[ i ].find( '.fl-builder-submenu' )[0].outerHTML
						} );
					}
					else {
						menuData.push( {
							type      : 'action',
							label     : overflowItems[ i ].data( 'title' ),
							className : overflowItems[ i ].removeClass( function( i, c ) {
											return c.replace( /fl-block-([^\s]+)/, '' );
										} ).attr( 'class' )
						} );
					}
				}

				actions.append( template( menuData ) );
				FLBuilder._initTipTips();
			}
		},

		/* Rows
		----------------------------------------------------------*/

		/**
		 * Removes all row overlays from the page.
		 *
		 * @since 1.0
		 * @access private
		 * @method _removeRowOverlays
		 */
		_removeRowOverlays: function()
		{
			$('.fl-row').removeClass('fl-block-overlay-active');
			$('.fl-row-overlay').remove();
			$('.fl-module').removeClass('fl-module-adjust-height');
			$('body').removeClass( 'fl-builder-row-resizing' );
			FLBuilder._closeAllSubmenus();
		},

		/**
		 * Removes all row overlays from the page.
		 *
		 * @since 1.0
		 * @access private
		 * @method _removeRowOverlays
		 */
		_disableGlobalRows: function()
		{
			if ( 'row' == FLBuilderConfig.userTemplateType ) {
				return;
			}

			$('.fl-row.fl-node-global').addClass( 'fl-node-disabled' );
		},

		/**
		 * Removes all row overlays from the page.
		 *
		 * @since 1.0
		 * @access private
		 * @method _removeRowOverlays
		 */
		_enableGlobalRows: function()
		{
			if ( 'row' == FLBuilderConfig.userTemplateType ) {
				return;
			}

			$( '.fl-node-disabled' ).removeClass( 'fl-node-disabled' );
		},

		/**
		 * Shows an overlay with actions when the mouse enters a row.
		 *
		 * @since 1.0
		 * @access private
		 * @method _rowMouseenter
		 */
		_rowMouseenter: function()
		{
			var row        = $( this ),
                rowTop     = row.offset().top,
                childTop   = null,
                overlay    = null,
                template   = wp.template( 'fl-row-overlay' );


			if ( row.closest( '.fl-builder-node-loading' ).length ) {
				return;
			}
            else if ( ! row.hasClass( 'fl-block-overlay-active' ) ) {

                // Append the overlay.
                overlay = FLBuilder._appendOverlay( row, template( {
                    global : row.hasClass( 'fl-node-global' ),
                    node   : row.attr('data-node'),
                } ) );

                // Adjust the overlay position if covered by negative margin content.
                row.find( '.fl-node-content:visible' ).each( function(){
                    var top = $( this ).offset().top;
                    childTop = ( null === childTop || childTop > top ) ? top : childTop;
                } );

                if ( null !== childTop && childTop < rowTop ) {
	                overlay.css( 'top', ( childTop - rowTop - 30 ) + 'px' );
                }

                // Put action headers on the bottom if they're hidden.
                if ( overlay.offset().top < 43 ) {
                    overlay.addClass( 'fl-row-overlay-header-bottom' );
                }

                // Adjust the height of modules if needed.
                row.find( '.fl-module' ).each( function(){
                    var module = $( this );
                    if ( module.outerHeight( true ) < 20 ) {
                        module.addClass( 'fl-module-adjust-height' );
                    }
                } );

                // Build the overlay overflow menu if needed.
                FLBuilder._buildOverlayOverflowMenu( overlay );
            }
		},

		/**
		 * Removes overlays when the mouse leaves a row.
		 *
		 * @since 1.0
		 * @access private
		 * @method _rowMouseleave
		 * @param {Object} e The event object.
		 */
		_rowMouseleave: function(e)
		{
			var toElement       = $(e.toElement) || $(e.relatedTarget),
				isOverlay       = toElement.hasClass('fl-row-overlay'),
				isOverlayChild  = toElement.closest('.fl-row-overlay').length > 0,
				isTipTip        = toElement.is('#tiptip_holder'),
				isTipTipChild   = toElement.closest('#tiptip_holder').length > 0;

			if(isOverlay || isOverlayChild || isTipTip || isTipTipChild) {
				return;
			}

			FLBuilder._removeRowOverlays();
		},

		/**
		 * Returns a helper element for row drag operations.
		 *
		 * @since 1.0
		 * @access private
		 * @method _rowDragHelper
		 * @return {Object} The helper element.
		 */
		_rowDragHelper: function()
		{
			return $('<div class="fl-builder-block-drag-helper">' + FLBuilderStrings.row + '</div>');
		},

		/**
		 * Initializes dragging for row. Rows themselves aren't sortables
		 * as nesting that many sortables breaks down quickly and draggable by
		 * itself is slow. Instead, we are programmatically triggering the drag
		 * of our helper div that isn't a nested sortable but connected to the
		 * sortables in the main layout.
		 *
		 * @since 1.9
		 * @access private
		 * @method _rowDragInit
		 * @param {Object} e The event object.
		 */
		_rowDragInit: function( e )
		{
			var handle = $( e.target ),
				helper = $( '.fl-row-sortable-proxy-item' ),
				row    = handle.closest( '.fl-row' );

			row.addClass( 'fl-node-dragging' );

			FLBuilder._blockDragInit( e );

			e.target = helper[ 0 ];

			helper.trigger( e );
		},

		/**
		 * Callback that fires when dragging starts for a row.
		 *
		 * @since 1.9
		 * @access private
		 * @method _rowDragStart
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_rowDragStart: function( e, ui )
		{
			var rows = $( FLBuilder._contentClass + ' .fl-row' ),
				row  = $( '.fl-node-dragging' );

			if ( 1 === rows.length ) {
				$( FLBuilder._contentClass ).addClass( 'fl-builder-empty' );
			}

			row.hide();

			FLBuilder._blockDragStart( e, ui );
		},

		/**
		 * Callback for when a row drag operation completes.
		 *
		 * @since 1.0
		 * @access private
		 * @method _rowDragStop
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_rowDragStop: function( e, ui )
		{
			var item     = ui.item,
				parent   = item.parent(),
				row      = null,
				group    = null,
				position = 0;

			FLBuilder._blockDragStop( e, ui );

			// A row was dropped back into the row list.
			if ( parent.hasClass( 'fl-builder-rows' ) ) {
				item.remove();
				return;
			}
			// A row was dropped back into the sortable proxy.
			else if ( parent.hasClass( 'fl-row-sortable-proxy' ) ) {
				$( '.fl-node-dragging' ).removeClass( 'fl-node-dragging' ).show();
				return;
			}
			// Add a new row.
			else if ( item.hasClass( 'fl-builder-block' ) ) {

				// Cancel the drop if the sortable is disabled?
				if ( parent.hasClass( 'fl-sortable-disabled' ) ) {
					item.remove();
					FLBuilder._showPanel();
					return;
				}
				// A new row was dropped into column.
				else if ( parent.hasClass( 'fl-col-content' ) ) {
					FLBuilder._addColGroup(
						item.closest( '.fl-col' ).attr( 'data-node' ),
						item.attr( 'data-cols' ),
						parent.find( '> .fl-module, .fl-col-group, .fl-builder-block' ).index( item )
					);
				}
				// A new row was dropped next to a column.
				else if ( parent.hasClass( 'fl-col-drop-target' ) ) {
					FLBuilder._addCols(
						parent.closest( '.fl-col' ),
						parent.hasClass( 'fl-col-drop-target-last' ) ? 'after' : 'before',
						item.attr( 'data-cols' ),
						parent.closest( '.fl-col-group-nested' ).length > 0
					);
				}
				// A new row was dropped into a column group position.
				else if ( parent.hasClass( 'fl-col-group-drop-target' ) ) {

					group    = item.closest( '.fl-col-group' );
					position = item.closest( '.fl-row' ).find( '.fl-row-content > .fl-col-group' ).index( group );

					FLBuilder._addColGroup(
						item.closest( '.fl-row' ).attr( 'data-node' ),
						item.attr( 'data-cols' ),
						parent.hasClass( 'fl-drop-target-last' ) ? position + 1 : position
					);
				}
				// A row was dropped into a row position.
				else {

					row = item.closest( '.fl-row' );
					position = ! row.length ? 0 : $( FLBuilder._contentClass + ' .fl-row' ).index( row );

					FLBuilder._addRow(
						item.attr('data-cols'),
						parent.hasClass( 'fl-drop-target-last' ) ? position + 1 : position
					);
				}

				// Remove the helper.
				item.remove();

				// Show the builder panel.
				FLBuilder._showPanel();

				// Show the module list.
				$( '.fl-builder-modules' ).siblings( '.fl-builder-blocks-section-title' ).eq( 0 ).trigger( 'click' );
			}
			// Reorder a row.
			else {

				row = $( '.fl-node-dragging' ).removeClass( 'fl-node-dragging' ).show();

				// Make sure a single row wasn't dropped back into the main layout.
				if ( ! parent.parent().hasClass( 'fl-builder-content' ) ) {

					// Move the row in the UI.
					if ( parent.hasClass( 'fl-drop-target-last' ) ) {
						parent.parent().after( row );
					}
					else {
						parent.parent().before( row );
					}

					// Reorder the row.
					FLBuilder._reorderNode(
						row.attr('data-node'),
						row.index()
					);
				}

				// Revert the proxy to its parent.
				$( '.fl-row-sortable-proxy' ).append( ui.item );
			}
		},

		/**
		 * Adds a new row to the layout.
		 *
		 * @since 1.0
		 * @access private
		 * @method _addRow
		 * @param {String} cols The type of column layout to use.
		 * @param {Number} position The position of the new row.
		 */
		_addRow: function(cols, position)
		{
			FLBuilder._showNodeLoadingPlaceholder( $( FLBuilder._contentClass ), position );

			FLBuilder._newRowPosition = position;

			FLBuilder.ajax({
				action: 'render_new_row',
				cols: cols,
				position: position
			}, FLBuilder._addRowComplete);
		},

		/**
		 * Adds the HTML for a new row to the layout when the AJAX
		 * add operation is complete. Adds a module if one is queued
		 * to go in the new row.
		 *
		 * @since 1.0
		 * @access private
		 * @method _addRowComplete
		 * @param {String} response The JSON response with the HTML for the new row.
		 */
		_addRowComplete: function(response)
		{
			var data 	= 'object' === typeof response ? response : JSON.parse(response),
				content = $(FLBuilder._contentClass),
				rowId   = $(data.html).data('node'),
				module  = FLBuilder._addModuleAfterNodeRender;

			// Add new row info to the data.
			data.nodeParent 	= content;
			data.nodePosition 	= FLBuilder._newRowPosition;

			// Render the layout.
			FLBuilder._renderLayout( data, function(){

				// Add a module to the newly created row.
				if(module !== null) {
					$('.fl-node-' + rowId + ' .fl-col-content').append(module);
					FLBuilder._reorderModule(module);
					FLBuilder._addModuleAfterNodeRender = null;
				}

				FLBuilder._removeNodeLoadingPlaceholder( $( '.fl-node-' + rowId ) );
				FLBuilder.triggerHook( 'didAddRow', rowId );
			} );
		},

		/**
		 * Callback for when the delete row button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _deleteRowClicked
		 * @param {Object} e The event object.
		 */
		_deleteRowClicked: function( e )
		{
			var row    = $(this).closest('.fl-row'),
				result = null;

			if(!row.find('.fl-module').length) {
				FLBuilder._deleteRow(row);
			}
			else {
				result = confirm(FLBuilderStrings.deleteRowMessage);

				if(result) {
					FLBuilder._deleteRow(row);
				}
			}

			FLBuilder._removeAllOverlays();
			e.stopPropagation();
		},

		/**
		 * Deletes a row.
		 *
		 * @since 1.0
		 * @access private
		 * @method _deleteRow
		 * @param {Object} row A jQuery reference of the row to delete.
		 */
		_deleteRow: function(row)
		{
			var nodeId = row.attr('data-node');

			FLBuilder.ajax({
				action: 'delete_node',
				node_id: nodeId
			});

			row.empty();
			row.remove();
			FLBuilder._setupEmptyLayout();
			FLBuilder._removeRowOverlays();
			FLBuilder.triggerHook( 'didDeleteRow', nodeId );
		},

		/**
		 * Duplicates a row.
		 *
		 * @since 1.3.8
		 * @access private
		 * @method _rowCopyClicked
		 * @param {Object} e The event object.
		 */
		_rowCopyClicked: function(e)
		{
			var row      	= $( this ).closest( '.fl-row' ),
				nodeId   	= row.attr( 'data-node' ),
				position 	= $( FLBuilder._contentClass + ' .fl-row' ).index( row ) + 1,
				clone    	= row.clone(),
				form	 	= $( '.fl-builder-settings[data-node]' ),
				formNodeId 	= form.attr( 'data-node' ),
				formNode	= ( formNodeId === nodeId ) ? row : row.find( '[data-node="' + formNodeId + '"]' ),
				settings 	= null;

			if ( form.length && formNode.length ) {
				settings = FLBuilder._getSettings( form );
				FLBuilderSettingsConfig.nodes[ formNodeId ] = settings;
			}

			clone.addClass( 'fl-node-' + nodeId + '-clone fl-builder-node-clone' );
			clone.find( '.fl-block-overlay' ).remove();
			row.after( clone );

			$( 'html, body' ).animate( {
				scrollTop: clone.offset().top - 75
			}, 500 );

			FLBuilder._showNodeLoading( nodeId + '-clone' );
			FLBuilder._newRowPosition = position;

			FLBuilder.ajax( {
				action: 'copy_row',
				node_id: nodeId,
				settings: settings,
				settings_id: formNodeId
			}, function( response ) {
				var data = JSON.parse( response );
				data.duplicatedRow = nodeId;
				FLBuilder._rowCopyComplete( data );
			} );

			e.stopPropagation();
		},

		/**
		 * Callback for when a row has been duplicated.
		 *
		 * @since 1.7
		 * @access private
		 * @method _rowCopyComplete
		 * @param {Object} data
		 */
		_rowCopyComplete: function( data )
		{
			data.nodeParent   = $( FLBuilder._contentClass );
			data.nodePosition = FLBuilder._newRowPosition;

			FLBuilder._renderLayout( data, function() {

				FLBuilder.triggerHook( 'didDuplicateRow', {
					newNodeId : data.nodeId,
					oldNodeId : data.duplicatedRow
				} );

				data.nodeParent.find( '.fl-builder-node-loading' ).eq( 0 ).remove();
			} );
		},

		/**
		 * Shows the settings lightbox and loads the row settings
		 * when the row settings button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _rowSettingsClicked
		 */
		_rowSettingsClicked: function( e )
		{
			var button = $( this ),
				nodeId = button.closest( '.fl-row' ).attr( 'data-node' ),
				global = button.closest( '.fl-block-overlay-global' ).length > 0,
				win    = null;

			if ( global && 'row' != FLBuilderConfig.userTemplateType ) {
				if ( FLBuilderConfig.userCanEditGlobalTemplates ) {
					win = window.open( $( '.fl-row[data-node="' + nodeId + '"]' ).attr( 'data-template-url' ) );
					win.FLBuilderGlobalNodeId = nodeId;
				}
			}
			else if ( button.hasClass( 'fl-block-settings' ) ) {

				FLBuilderSettingsForms.render( {
					id        : 'row',
					nodeId    : nodeId,
					className : 'fl-builder-row-settings',
					attrs     : 'data-node="' + nodeId + '"',
					buttons   : ! global ? ['save-as'] : [],
					badges    : global ? [ FLBuilderStrings.global ] : [],
					settings  : FLBuilderSettingsConfig.nodes[ nodeId ],
					preview	  : {
						type: 'row'
					}
				}, function() {
					$( '#fl-field-width select' ).on( 'change', FLBuilder._rowWidthChanged );
					$( '#fl-field-content_width select' ).on( 'change', FLBuilder._rowWidthChanged );
				} );
			}

			e.stopPropagation();
		},

		/**
		 * Shows or hides the row max-width setting when the
		 * row or row content width is changed.
		 *
		 * @since 2.0
		 * @access private
		 * @method _rowWidthChanged
		 */
		_rowWidthChanged: function()
		{
			var rowWidth     = $( '#fl-field-width select' ).val(),
				contentWidth = $( '#fl-field-content_width select' ).val(),
				maxWidth     = $( '#fl-field-max_content_width' );

			if ( 'fixed' == rowWidth || ( 'full' == rowWidth && 'fixed' == contentWidth ) ) {
				maxWidth.show();
			} else {
				maxWidth.hide();
			}
		},

		/**
		 * Resets the max-width of a row.
		 *
		 * @since 2.0
		 * @access private
		 * @method _resetRowWidthClicked
		 */
		_resetRowWidthClicked: function( e )
		{
			var button   = $( this ),
				row      = button.closest( '.fl-row' ),
				nodeId   = row.attr( 'data-node' ),
				content  = row.find( '.fl-row-content' ),
				width    = FLBuilderConfig.global.row_width + 'px',
				settings = $( '.fl-builder-row-settings' );

			if ( row.hasClass( 'fl-row-fixed-width' ) ) {
				row.css( 'max-width', width );
			}

			content.css( 'max-width', width );

			if ( settings.length ) {
				settings.find( '[name=max_content_width]' ).val( '' );
			}

			FLBuilder.ajax({
				action	: 'resize_row_content',
				node	: nodeId,
				width   : ''
			});

			FLBuilder._closeAllSubmenus();
			FLBuilder.triggerHook( 'didResetRowWidth', nodeId );

			e.stopPropagation();
		},

		/* Columns
		----------------------------------------------------------*/

		/**
		 * Adds a dashed border to empty columns.
		 *
		 * @since 1.0
		 * @access private
		 * @method _highlightEmptyCols
		 */
		_highlightEmptyCols: function()
		{
			var notGlobal = 'row' == FLBuilderConfig.userTemplateType ? '' : ':not(.fl-node-global)',
				rows 	  = $(FLBuilder._contentClass + ' .fl-row' + notGlobal),
				cols 	  = $(FLBuilder._contentClass + ' .fl-col' + notGlobal);

			$( '.fl-row-highlight' ).removeClass('fl-row-highlight');
			cols.removeClass('fl-col-highlight').find('.fl-col-content').css( 'height', '' );

			cols.each(function(){

				var col = $(this);

				if(col.find('.fl-module, .fl-col').length === 0) {
					col.addClass('fl-col-highlight');
				}
			});
		},

		/**
		 * Remove any column highlights
		 *
		 * @since 2.0
		 * @access private
		 * @method _removeEmptyColHighlights
		 */
		_removeEmptyColHighlights: function() {
			$( '.fl-row-highlight' ).removeClass('fl-row-highlight');
			$( '.fl-col-highlight' ).removeClass('fl-col-highlight');
		},

		/**
		 * Sets up dashed borders to show where things can
		 * be dropped in rows and columns.
		 *
		 * @since 1.9
		 * @access private
		 * @method _highlightRowsAndColsForDrag
		 * @param {Object} target The event target for the drag.
		 */
		_highlightRowsAndColsForDrag: function( target )
		{
			var notGlobal = 'row' == FLBuilderConfig.userTemplateType ? '' : ':not(.fl-node-global)';

			// Highlight rows.
			$( FLBuilder._contentClass + ' .fl-row' ).addClass( 'fl-row-highlight' );

			// Highlight columns.
			if ( ! target.closest( '.fl-row-overlay' ).length ) {
				$( FLBuilder._contentClass + ' .fl-col' + notGlobal ).addClass( 'fl-col-highlight' );
			}
		},

		/**
		 * Adjust the height of columns with modules in them
		 * to account for the drop zone and keep the layout
		 * from jumping around.
		 *
		 * @since 1.9
		 * @access private
		 * @method _adjustColHeightsForDrag
		 */
		_adjustColHeightsForDrag: function()
		{
			var notGlobal = 'row' == FLBuilderConfig.userTemplateType ? '' : '.fl-row:not(.fl-node-global) ',
				content   = $( FLBuilder._contentClass ),
				notNested = content.find( notGlobal + '.fl-col-group:not(.fl-col-group-nested) > .fl-col > .fl-col-content' ),
				nested    = content.find( notGlobal + '.fl-col-group-nested .fl-col-content' ),
				col       = null,
				i         = 0;

			$( '.fl-node-drag-init' ).hide();

			for ( ; i < nested.length; i++ ) {
				FLBuilder._adjustColHeightForDrag( nested.eq( i ) );
			}

			for ( i = 0; i < notNested.length; i++ ) {
				FLBuilder._adjustColHeightForDrag( notNested.eq( i ) );
			}

			$( '.fl-node-drag-init' ).show();
		},

		/**
		 * Adjust the height of a single column for dragging.
		 *
		 * @since 1.9
		 * @access private
		 * @method _adjustColHeightForDrag
		 */
		_adjustColHeightForDrag: function( col )
		{
			if ( col.find( '.fl-module:visible, .fl-col:visible' ).length ) {
				col.height( col.height() + 45 );
			}
		},

		/**
		 * Adds a border guide to a column when the column
		 * actions submenu is open for a module.
		 *
		 * @since 1.9
		 * @access private
		 * @method _showColHighlightGuide
		 */
		_showColHighlightGuide: function()
		{
			var li         = $( this ),
				link       = li.find( 'a' ),
				col        = li.closest( '.fl-col' ),
				parentCol  = col.parents( '.fl-col' ),
				guide      = $( '<div class="fl-col-highlight-guide"></div>' ),
				guideTop   = null,
				overlayTop = li.closest( '.fl-block-overlay' ).offset().top;

			if ( link.hasClass( 'fl-block-col-move-parent' ) || link.hasClass( 'fl-block-col-edit-parent' ) ) {
				col = parentCol;
			}
			if ( col.hasClass( 'fl-col-highlight' ) ) {
				return;
			}

			col.find( '> .fl-col-content' ).append( guide );
			col.addClass( 'fl-col-has-highlight-guide' );

			guideTop = guide.offset().top;

			if ( guideTop > overlayTop ) {
				guide.css( 'top', ( overlayTop - guideTop + 4 ) + 'px' );
			}
		},

		/**
		 * Removes all column highlight guides.
		 *
		 * @since 1.9
		 * @access private
		 * @method _showColHighlightGuide
		 */
		_removeColHighlightGuides: function()
		{
			$( '.fl-col-has-highlight-guide' ).removeClass( 'fl-col-has-highlight-guide' );
			$( '.fl-col-highlight-guide' ).remove();
		},

		/**
		 * Shows an overlay with actions when the mouse enters a column.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _colMouseenter
		 */
		_colMouseenter: function()
		{
			var col 	 	  	= $( this ),
				group           = col.closest( '.fl-col-group' ),
				groupLoading    = group.hasClass( 'fl-col-group-has-child-loading' ),
				global		  	= col.hasClass( 'fl-node-global' ),
				parentGlobal  	= col.parents( '.fl-node-global' ).length > 0,
				numCols		  	= col.closest( '.fl-col-group' ).find( '> .fl-col' ).length,
				index           = group.find( '> .fl-col' ).index( col ),
				first   		= 0 === index,
				last    		= numCols === index + 1,
				hasChildCols    = col.find( '.fl-col' ).length > 0,
				parentCol       = col.parents( '.fl-col' ),
				parentGroup     = parentCol.closest( '.fl-col-group' ),
				hasParentCol    = parentCol.length > 0,
				numParentCols	= hasParentCol ? parentGroup.find( '> .fl-col' ).length : 0,
				parentIndex     = parentGroup.find( '> .fl-col' ).index( parentCol ),
				parentFirst     = hasParentCol ? 0 === parentIndex : false,
				parentLast      = hasParentCol ? numParentCols === parentIndex + 1 : false,
				contentWidth    = col.find( '> .fl-col-content' ).width(),
				row				= col.closest('.fl-row'),
				rowIsFixedWidth = !! row.find('.fl-row-fixed-width').addBack('.fl-row-fixed-width').length,
				userCanResizeRows = FLBuilderConfig.rowResize.userCanResizeRows,
				template 		= wp.template( 'fl-col-overlay' ),
				overlay			= null;

			if ( FLBuilderConfig.simpleUi ) {
				return;
			}
			else if ( global && parentGlobal && 'row' != FLBuilderConfig.userTemplateType ) {
				return;
			}
			else if ( col.find( '.fl-module, .fl-builder-node-loading-placeholder' ).length > 0 ) {
				return;
			}
			else if ( col.find( '.fl-col' ).length > 0 ) {
				return;
			}
			else if ( col.closest( '.fl-builder-node-loading' ).length ) {
				return;
			}
			else if ( ! col.hasClass( 'fl-block-overlay-active' ) ) {

				// Remove existing overlays.
				FLBuilder._removeColOverlays();
				FLBuilder._removeModuleOverlays();

				// Append the template.
				overlay = FLBuilder._appendOverlay( col, template( {
					global	      : global,
					groupLoading  : groupLoading,
					numCols	      : numCols,
					first         : first,
					last   	      : last,
					hasChildCols  : hasChildCols,
					hasParentCol  : hasParentCol,
					parentFirst   : parentFirst,
					parentLast    : parentLast,
					numParentCols : numParentCols,
					contentWidth  : contentWidth,
					rowIsFixedWidth : rowIsFixedWidth,
					userCanResizeRows : userCanResizeRows,
				} ) );

				// Build the overlay overflow menu if needed.
				FLBuilder._buildOverlayOverflowMenu( overlay );

				// Init column resizing.
				FLBuilder._initColDragResizing();
			}

			$( 'body' ).addClass( 'fl-block-overlay-muted' );
		},

		/**
		 * Removes overlays when the mouse leaves a column.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _colMouseleave
		 * @param {Object} e The event object.
		 */
		_colMouseleave: function(e)
		{
			var col             = $(this),
				toElement       = $(e.toElement) || $(e.relatedTarget),
				hasModules      = col.find('.fl-module').length > 0,
				isTipTip        = toElement.is('#tiptip_holder'),
				isTipTipChild   = toElement.closest('#tiptip_holder').length > 0;

			if( isTipTip || isTipTipChild ) {
				return;
			}
			if( hasModules ) {
				return;
			}

			FLBuilder._removeColOverlays();
			FLBuilder._removeColHighlightGuides();
			FLBuilder._closeAllSubmenus();
		},

		/**
		 * Removes all column overlays from the page.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _removeColOverlays
		 */
		_removeColOverlays: function()
		{
			var cols = $( '.fl-col' );

			cols.removeClass('fl-block-overlay-active');
			cols.find('.fl-col-overlay').remove();
			$('body').removeClass('fl-block-overlay-muted');
			FLBuilder._closeAllSubmenus();
		},

		/**
		 * Returns a helper element for column drag operations.
		 *
		 * @since 1.9
		 * @access private
		 * @method _colDragHelper
		 * @return {Object} The helper element.
		 */
		_colDragHelper: function()
		{
			return $('<div class="fl-builder-block-drag-helper">' + FLBuilderStrings.column + '</div>');
		},

		/**
		 * Initializes dragging for columns. Columns themselves aren't sortables
		 * as nesting that many sortables breaks down quickly and draggable by
		 * itself is slow. Instead, we are programmatically triggering the drag
		 * of our helper div that isn't a nested sortable but connected to the
		 * sortables in the main layout.
		 *
		 * @since 1.9
		 * @access private
		 * @method _colDragInit
		 * @param {Object} e The event object.
		 */
		_colDragInit: function( e )
		{
			var handle = $( e.target ),
				helper = $( '.fl-col-sortable-proxy-item' ),
				col    = handle.closest( '.fl-col' );

			if ( handle.hasClass( 'fl-block-col-move-parent' ) ) {
				col = col.parents( '.fl-col' );
			}

			col.addClass( 'fl-node-dragging' );

			FLBuilder._blockDragInit( e );
			FLBuilder._removeColHighlightGuides();

			e.target = helper[ 0 ];

			helper.trigger( e );
		},

		/**
		 * Callback that fires when dragging starts for a column.
		 *
		 * @since 1.9
		 * @access private
		 * @method _colDragStart
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_colDragStart: function( e, ui )
		{
			var col = $( '.fl-node-dragging' );

			col.hide();

			FLBuilder._resetColumnWidths( col.parent() );
			FLBuilder._blockDragStart( e, ui );
		},

		/**
		 * Callback that fires when dragging stops for a column.
		 *
		 * @since 1.9
		 * @access private
		 * @method _colDragStop
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_colDragStop: function( e, ui )
		{
			FLBuilder._blockDragStop( e, ui );

			var col        = $( '.fl-node-dragging' ).removeClass( 'fl-node-dragging' ).show(),
				colId      = col.attr( 'data-node' ),
				newParent  = ui.item.parent(),
				oldGroup   = col.parent(),
				oldGroupId = oldGroup.attr( 'data-node' )
				newGroup   = newParent.closest( '.fl-col-group' ),
				newGroupId = newGroup.attr( 'data-node' ),
				newRow     = newParent.closest('.fl-row'),
				position   = 0;

			// Cancel the drop if the sortable is disabled?
			if ( newParent.hasClass( 'fl-sortable-disabled' ) ) {
				FLBuilder._resetColumnWidths( oldGroup );
			}
			// A column was dropped back into the sortable proxy.
			else if ( newParent.hasClass( 'fl-col-sortable-proxy' ) ) {
				FLBuilder._resetColumnWidths( oldGroup );
			}
			// A column was dropped into a column.
			else if ( newParent.hasClass( 'fl-col-content' ) ) {

				// Remove the column.
				col.remove();

				// Remove empty old groups (needs to be done here for correct position).
				if ( 0 === oldGroup.find( '.fl-col' ).length ) {
					oldGroup.remove();
				}

				// Find the new group position.
				position = newParent.find( '> .fl-module, .fl-col-group, .fl-col-sortable-proxy-item' ).index( ui.item );

				// Add the new group.
				FLBuilder._addColGroup( newParent.closest( '.fl-col' ).attr('data-node'), colId, position );
			}
			// A column was dropped into a column position.
			else if ( newParent.hasClass( 'fl-col-drop-target' ) ) {

				// Move the column in the UI.
				if ( newParent.hasClass( 'fl-col-drop-target-last' ) ) {
					newParent.parent().after( col );
				}
				else {
					newParent.parent().before( col );
				}

				// Reset the UI column widths.
				FLBuilder._resetColumnWidths( newGroup );

				// Save the column move via AJAX.
				if ( oldGroupId == newGroupId ) {
					FLBuilder.ajax( {
						action: 'reorder_col',
						node_id: colId,
						position: col.index()
					} );
				}
				else {
					FLBuilder.ajax( {
						action: 'move_col',
						node_id: colId,
						new_parent: newGroupId,
						position: col.index(),
						resize: [ oldGroupId, newGroupId ]
					} );
				}

				// Trigger a layout resize.
				FLBuilder._resizeLayout();
			}
			// A column was dropped into a column group position.
			else if ( newParent.hasClass( 'fl-col-group-drop-target' ) ) {

				// Remove the column.
				col.remove();

				// Remove empty old groups (needs to be done here for correct position).
				if ( 0 === oldGroup.find( '.fl-col' ).length ) {
					oldGroup.remove();
				}

				// Find the new group position.
				position = newRow.find( '.fl-row-content > .fl-col-group' ).index( newGroup );
				position = newParent.hasClass( 'fl-drop-target-last' ) ? position + 1 : position;

				// Add the new group.
				FLBuilder._addColGroup( newRow.attr('data-node'), colId, position );
			}
			// A column was dropped into a row position.
			else if ( newParent.hasClass( 'fl-row-drop-target' ) ) {

				// Remove the column.
				col.remove();

				// Find the new row position.
				position = newParent.closest( '.fl-builder-content' ).find( '.fl-row' ).index( newRow );
				position = newParent.hasClass( 'fl-drop-target-last' ) ? position + 1 : position;

				// Add the new row.
				FLBuilder._addRow( colId, position );
			}

			// Remove empty old groups.
			if ( 0 === oldGroup.find( '.fl-col' ).length ) {
				oldGroup.remove();
			}

			// Revert the proxy to its parent.
			$( '.fl-col-sortable-proxy' ).append( ui.item );

			// Finish the drag.
			FLBuilder._highlightEmptyCols();
			FLBuilder._initDropTargets();
			FLBuilder._initSortables();
			FLBuilder._closeAllSubmenus();
		},

		/**
		 * Shows the settings lightbox and loads the column settings
		 * when the column settings button is clicked.
		 *
		 * @since 1.1.9
		 * @access private
		 * @method _colSettingsClicked
		 * @param {Object} e The event object.
		 */
		_colSettingsClicked: function(e)
		{
			var button   = $( this ),
				col      = button.closest('.fl-col'),
				content  = col.find( '> .fl-col-content' ),
				global   = button.closest( '.fl-block-overlay-global' ).length > 0,
				nodeId   = null;

			if ( FLBuilder._colResizing ) {
				return;
			}

			if ( button.hasClass( 'fl-block-col-edit-parent' ) ) {
				nodeId = col.parents( '.fl-col' ).data( 'node' );
			}
			else {
				nodeId = col.attr('data-node');
			}

			FLBuilderSettingsForms.render( {
				id        : 'col',
				nodeId    : nodeId,
				className : 'fl-builder-col-settings',
				attrs     : 'data-node="' + nodeId + '"',
				badges    : global ? [ FLBuilderStrings.global ] : [],
				settings  : FLBuilderSettingsConfig.nodes[ nodeId ],
				preview   : {
					type: 'col'
				}
			}, function() {
				if ( col.siblings( '.fl-col' ).length === 0  ) {
					$( '#fl-builder-settings-section-general' ).hide();
				}
				else if( content.width() <= 40 ) {
					$( '#fl-field-size' ).hide();
				}
			} );

			e.stopPropagation();
		},

		/**
		 * Callback for when the copy column button is clicked.
		 *
		 * @since 2.0
		 * @access private
		 * @method _copyColClicked
		 * @param {Object} e The event object.
		 */
		_copyColClicked: function( e )
		{
			var col    		= $( this ).closest( '.fl-col' ),
				nodeId 		= col.attr( 'data-node' ),
				clone  		= col.clone(),
				group  		= col.parent(),
				form	 	= $( '.fl-builder-settings[data-node]' ),
				formNodeId 	= form.attr( 'data-node' ),
				formNode	= ( formNodeId === nodeId ) ? col : col.find( '[data-node="' + formNodeId + '"]' ),
				settings 	= null;

			if ( form.length && formNode.length ) {
				settings = FLBuilder._getSettings( form );
				FLBuilderSettingsConfig.nodes[ formNodeId ] = settings;
			}

			clone.addClass( 'fl-node-' + nodeId + '-clone fl-builder-node-clone' );
			clone.find( '.fl-block-overlay' ).remove();
			col.after( clone );

			FLBuilder._showNodeLoading( nodeId + '-clone' );
			FLBuilder._newColParent   = group;
			FLBuilder._newColPosition = col.index() + 1;
			FLBuilder._resetColumnWidths( group );

			FLBuilder.ajax( {
				action: 'copy_col',
				node_id: nodeId,
				settings: settings,
				settings_id: formNodeId
			}, function( response ){
				var data = JSON.parse( response );
				data.duplicatedColumn = nodeId;
				FLBuilder._copyColComplete( data );
			} );

			e.stopPropagation();
		},

		/**
		 * Callback for when a column has been duplicated.
		 *
		 * @since 2.0
		 * @access private
		 * @method _copyColComplete
		 * @param {Object} data
		 */
		_copyColComplete: function( data )
		{
			data.nodeParent   = FLBuilder._newColParent;
			data.nodePosition = FLBuilder._newColPosition;

			FLBuilder._renderLayout( data, function(){

				FLBuilder.triggerHook( 'didDuplicateColumn', {
					newNodeId : data.nodeId,
					oldNodeId : data.duplicatedColumn
				} );

				data.nodeParent.find( '.fl-builder-node-loading' ).eq( 0 ).remove();
			} );
		},

		/**
		 * Callback for when the delete column button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _deleteColClicked
		 * @param {Object} e The event object.
		 */
		_deleteColClicked: function( e )
		{
			var button         = $( this ),
				col            = button.closest( '.fl-col' ),
				parentGroup    = col.closest( '.fl-col-group' ),
				parentCol      = col.parents( '.fl-col' ),
				hasParentCol   = parentCol.length > 0,
				parentChildren = parentCol.find( '> .fl-col-content > .fl-module, > .fl-col-content > .fl-col-group' ),
				siblingCols    = col.siblings( '.fl-col' ),
				result         = true;

			if ( col.find( '.fl-module' ).length > 0 ) {
				result = confirm( FLBuilderStrings.deleteColumnMessage );
			}

			// Handle deleting of nested columns.
			if ( hasParentCol && 1 === parentChildren.length ) {

				if ( 0 === siblingCols.length ) {
					col = parentCol;
				}
				else if ( 1 === siblingCols.length && ! siblingCols.find( '.fl-module' ).length ) {
					col = parentGroup;
				}
			}

			if ( result ) {
				FLBuilder._deleteCol( col );
				FLBuilder._removeAllOverlays();
				FLBuilder._highlightEmptyCols();
			}

			e.stopPropagation();
		},

		/**
		 * Deletes a column.
		 *
		 * @since 1.0
		 * @access private
		 * @method _deleteCol
		 * @param {Object} col A jQuery reference of the column to delete (can also be a group).
		 */
		_deleteCol: function(col)
		{
			var nodeId = col.attr('data-node'),
				row    = col.closest('.fl-row'),
				group  = col.closest('.fl-col-group'),
				cols   = null,
				width  = 0;

			col.remove();
			rowCols   = row.find('.fl-row-content > .fl-col-group > .fl-col');
			groupCols = group.find(' > .fl-col');

			if(0 === rowCols.length && 'row' != FLBuilderConfig.userTemplateType) {
				FLBuilder._deleteRow(row);
			}
			else {

				if(0 === groupCols.length) {
					group.remove();
				}
				else {

					if ( 6 === groupCols.length ) {
						width = 16.65;
					}
					else if ( 7 === groupCols.length ) {
						width = 14.28;
					}
					else {
						width = Math.round( 100 / groupCols.length * 100 ) / 100;
					}

					groupCols.css('width', width + '%');

					FLBuilder.triggerHook( 'didResetColumnWidths', {
						cols : groupCols
					} );
				}

				FLBuilder.ajax({
					action          : 'delete_col',
					node_id         : nodeId,
					new_width       : width
				});

				FLBuilder._initDropTargets();
				FLBuilder._initSortables();
				FLBuilder.triggerHook( 'didDeleteColumn', nodeId );
			}
		},

		/**
		 * Inserts a column (or columns) before or after another column.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _addCols
		 * @param {Object} col A jQuery reference of the column to insert before or after.
		 * @param {String} insert Either before or after.
		 * @param {String} type The type of column(s) to insert.
		 * @param {Boolean} nested Whether these columns are nested or not.
		 */
		_addCols: function( col, insert, type, nested )
		{
			var parent   = col.closest( '.fl-col-group' ),
				position = parent.find( '.fl-col' ).index( col );

			type   = typeof type == 'undefined' ? '1-col' : type;
			nested = typeof nested == 'undefined' ? false : nested;

			if ( 'after' == insert ) {
				position++;
			}

			FLBuilder._showNodeLoadingPlaceholder( parent, position );
			FLBuilder._removeAllOverlays();

			FLBuilder.ajax( {
				action          : 'render_new_columns',
				node_id         : col.attr('data-node'),
				insert 			: insert,
				type            : type,
				nested			: nested ? 1 : 0
			}, FLBuilder._addColsComplete );
		},

		/**
		 * Adds the HTML for columns to the layout when the AJAX add
		 * operation is complete. Adds a module if one is queued to
		 * go in a new column.
		 *
		 * @since 1.9
		 * @access private
		 * @method _addColsComplete
		 * @param {String} response The JSON response with the HTML for the new column(s).
		 */
		_addColsComplete: function( response )
		{
			var data       = JSON.parse( response ),
				col        = null,
				moduleData = FLBuilder._addModuleAfterNodeRender,
				module     = null;

			// Render the layout.
			FLBuilder._renderLayout( data, function() {

				// Add a module to a newly created column.
				if ( moduleData !== null ) {

					$( '.fl-module[data-node="' + moduleData.module.data( 'node' ) + '"]' ).remove()

					col = $( '.fl-col[data-node="' + moduleData.colId + '"]' );

					if ( 'after' == moduleData.position ) {
						col.next().find( '.fl-col-content' ).append( moduleData.module );
					}
					else {
						col.prev().find( '.fl-col-content' ).append( moduleData.module );
					}

					FLBuilder._reorderModule( moduleData.module );
					FLBuilder._addModuleAfterNodeRender = null;
				}

				FLBuilder.triggerHook( 'didAddColumn', data.nodeId );

				FLBuilder.triggerHook( 'didResetColumnWidths', {
					cols : $( '.fl-node-' + data.nodeId ).find( '> .fl-col' )
				} );
			} );
		},

		/**
		 * Adds a new column group to the layout.
		 *
		 * @since 1.0
		 * @access private
		 * @method _addColGroup
		 * @param {String} nodeId The node ID of the parent row.
		 * @param {String} cols The type of column layout to use.
		 * @param {Number} position The position of the new column group.
		 */
		_addColGroup: function(nodeId, cols, position)
		{
			var parent = $( '.fl-node-' + nodeId );

			// Save the new column group info.
			FLBuilder._newColGroupPosition = position;

			if ( parent.hasClass( 'fl-col' ) ) {
				FLBuilder._newColGroupParent = parent.find( ' > .fl-col-content' );
			}
			else {
				FLBuilder._newColGroupParent = parent.find( '.fl-row-content' );
			}

			// Show the loader.
			FLBuilder._showNodeLoadingPlaceholder( FLBuilder._newColGroupParent, position );

			// Send the request.
			FLBuilder.ajax({
				action      : 'render_new_column_group',
				cols        : cols,
				node_id     : nodeId,
				position    : position
			}, FLBuilder._addColGroupComplete);
		},

		/**
		 * Adds the HTML for a new column group to the layout when
		 * the AJAX add operation is complete. Adds a module if one
		 * is queued to go in the new column group.
		 *
		 * @since 1.0
		 * @access private
		 * @method _addColGroupComplete
		 * @param {String} response The JSON response with the HTML for the new column group.
		 */
		_addColGroupComplete: function(response)
		{
			var data    = JSON.parse(response),
				html    = $(data.html),
				groupId = html.data('node'),
				colId   = html.find('.fl-col').data('node'),
				module  = FLBuilder._addModuleAfterNodeRender;

			// Add new column group info to the data.
			data.nodeParent 	= FLBuilder._newColGroupParent;
			data.nodePosition 	= FLBuilder._newColGroupPosition;

			// Render the layout.
			FLBuilder._renderLayout( data, function(){

				// Added the nested columns class if needed.
				if ( data.nodeParent.hasClass( 'fl-col-content' ) ) {
					data.nodeParent.parents( '.fl-col' ).addClass( 'fl-col-has-cols' );
				}

				// Add a module to the newly created column group.
				if(module !== null) {
					$('.fl-node-' + colId + ' .fl-col-content').append(module);
					FLBuilder._reorderModule(module);
					FLBuilder._addModuleAfterNodeRender = null;
				}

				// Remove the loading placeholder.
				FLBuilder._removeNodeLoadingPlaceholder( $( '.fl-node-' + groupId ) );
				FLBuilder.triggerHook( 'didAddColumnGroup', groupId );
			} );
		},

		/**
		 * Initializes draggables for column resizing.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _initColDragResizing
		 */
		_initColDragResizing: function()
		{
			$( '.fl-block-col-resize' ).not( '.fl-block-row-resize' ).draggable( {
				axis 	: 'x',
				start 	: FLBuilder._colDragResizeStart,
				drag	: FLBuilder._colDragResize,
				stop 	: FLBuilder._colDragResizeStop
			} );
		},

		/**
		 * Fires when dragging for a column resize starts.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _colDragResizeStart
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_colDragResizeStart: function( e, ui )
		{
			// Setup resize vars.
			var handle 		   = $( ui.helper ),
				direction 	   = '',
				resizeParent   = handle.hasClass( 'fl-block-col-resize-parent' ),
				parentCol      = resizeParent ? handle.closest( '.fl-col' ).parents( '.fl-col' ) : null,
				group		   = resizeParent ? parentCol.parents( '.fl-col-group' ) : handle.closest( '.fl-col-group' ),
				cols 		   = group.find( '> .fl-col' ),
				col 		   = resizeParent ? parentCol : handle.closest( '.fl-col' ),
				colId		   = col.attr( 'data-node' ),
				colSetting	   = $( '[data-node=' + colId + '] #fl-field-size input' ),
				sibling 	   = null,
				siblingId 	   = null,
				siblingSetting = null,
				availWidth     = 100,
				i 			   = 0,
				setting		   = null,
				settingType    = null;

			// Find the direction and sibling.
			if ( handle.hasClass( 'fl-block-col-resize-e' ) ) {
				direction = 'e';
				sibling   = col.nextAll( '.fl-col' ).first();
			}
			else {
				direction = 'w';
				sibling   = col.prevAll( '.fl-col' ).first();
			}

			siblingId 	   = sibling.attr( 'data-node' );
			siblingSetting = $( '[data-node=' + siblingId + '] #fl-field-size input' );

			// Find the available width.
			for ( ; i < cols.length; i++ ) {

				if ( cols.eq( i ).data( 'node' ) == col.data( 'node' ) ) {
					continue;
				}
				if ( cols.eq( i ).data( 'node' ) == sibling.data( 'node' ) ) {
					continue;
				}

				availWidth -= parseFloat( cols.eq( i )[ 0 ].style.width );
			}

			// Find the setting if a column form is open.
			if ( colSetting.length ) {
				setting = colSetting;
				settingType = 'col';
			} else if ( siblingSetting.length ) {
				setting = siblingSetting;
				settingType = 'sibling';
			}

			// Build the resize data object.
			FLBuilder._colResizeData = {
				handle			: handle,
				feedbackLeft	: handle.find( '.fl-block-col-resize-feedback-left' ),
				feedbackRight	: handle.find( '.fl-block-col-resize-feedback-right' ),
				direction		: direction,
				groupWidth		: group.outerWidth(),
				col 			: col,
				colWidth 		: parseFloat( col[ 0 ].style.width ) / 100,
				sibling 		: sibling,
				offset  		: ui.position.left,
				availWidth		: availWidth,
				setting			: setting,
				settingType		: settingType
			};

			// Set the resizing flag.
			FLBuilder._colResizing = true;

			// Add the body col resize class.
			$( 'body' ).addClass( 'fl-builder-col-resizing' );

			// Close the builder panel and destroy overlay events.
			FLBuilder._closePanel();
			FLBuilder._destroyOverlayEvents();

			// Trigger the col-resize-start hook.
			FLBuilder.triggerHook( 'col-resize-start' );
		},

		/**
		 * Fires when dragging for a column resize is in progress.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _colDragResize
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_colDragResize: function( e, ui )
		{
			// Setup resize vars.
			var data 			= FLBuilder._colResizeData,
				overlay 		= data.handle.closest( '.fl-block-overlay' ),
				change 			= ( data.offset - ui.position.left ) / data.groupWidth,
				colWidth 		= 'e' == data.direction ? ( data.colWidth - change ) * 100 : ( data.colWidth + change ) * 100,
				colRound 		= Math.round( colWidth * 100 ) / 100,
				siblingWidth	= data.availWidth - colWidth,
				siblingRound	= Math.round( siblingWidth * 100 ) / 100,
				minRound		= 8,
				maxRound		= Math.round( ( data.availWidth - minRound ) * 100 ) / 100;

			// Set the min/max width if needed.
			if ( colRound < minRound ) {
				colRound 		= minRound;
				siblingRound 	= maxRound;
			}
			else if ( siblingRound < minRound ) {
				colRound 		= maxRound;
				siblingRound 	= minRound;
			}

			// Set the feedback values.
			if ( 'e' == data.direction ) {
				data.feedbackLeft.html( colRound.toFixed( 1 ) + '%'  ).show();
				data.feedbackRight.html( siblingRound.toFixed( 1 ) + '%'  ).show();
			}
			else {
				data.feedbackLeft.html( siblingRound.toFixed( 1 ) + '%'  ).show();
				data.feedbackRight.html( colRound.toFixed( 1 ) + '%'  ).show();
			}

			// Set the width attributes.
			data.col.css( 'width', colRound + '%' );
			data.sibling.css( 'width', siblingRound + '%' );

			// Update the setting if the col or sibling's settings are open.
			if ( data.setting ) {
				if ( 'col' === data.settingType ) {
					data.setting.val( parseFloat( data.col[ 0 ].style.width ) );
				} else if ( 'sibling' === data.settingType ) {
					data.setting.val( parseFloat( data.sibling[ 0 ].style.width ) );
				}
			}

			// Build the overlay overflow menu if needed.
			FLBuilder._buildOverlayOverflowMenu( overlay );

			// Trigger the col-resize-drag hook.
			FLBuilder.triggerHook( 'col-resize-drag' );
		},

		/**
		 * Fires when dragging for a column resize stops.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _colDragResizeStop
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_colDragResizeStop: function( e, ui )
		{
			var data      	 = FLBuilder._colResizeData,
				overlay   	 = FLBuilder._colResizeData.handle.closest( '.fl-block-overlay' ),
				colId     	 = data.col.data( 'node' ),
				colWidth  	 = parseFloat( data.col[ 0 ].style.width ),
				siblingId 	 = data.sibling.data( 'node' ),
				siblingWidth = parseFloat( data.sibling[ 0 ].style.width );

			// Hide the feedback divs.
			FLBuilder._colResizeData.feedbackLeft.hide();
			FLBuilder._colResizeData.feedbackRight.hide();

			// Save the resize data.
			FLBuilder.ajax({
				action			: 'resize_cols',
				col_id			: colId,
				col_width		: colWidth,
				sibling_id		: siblingId,
				sibling_width	: siblingWidth
			});

			// Build the overlay overflow menu if needed.
			FLBuilder._buildOverlayOverflowMenu( overlay );

			// Reset the resize data.
			FLBuilder._colResizeData = null;

			// Remove the body col resize class.
			$( 'body' ).removeClass( 'fl-builder-col-resizing' );

			// Rebind overlay events.
			FLBuilder._bindOverlayEvents();

			// Set the resizing flag to false with a timeout so other events get the right value.
			setTimeout( function() { FLBuilder._colResizing = false; }, 50 );

			// Trigger the col-resize-stop hook.
			FLBuilder.triggerHook( 'col-resize-stop' );

			FLBuilder.triggerHook( 'didResizeColumn', {
				colId			: colId,
				colWidth		: colWidth,
				siblingId		: siblingId,
				siblingWidth	: siblingWidth
			} );
		},

		/**
		 * Resets the widths of all columns in a row when the
		 * Reset Column Widths button is clicked.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _resetColumnWidthsClicked
		 * @param {Object} e The event object.
		 */
		_resetColumnWidthsClicked: function( e )
		{
			var button   = $( this ),
				isRow    = !! button.closest( '.fl-row-overlay' ).length,
				group    = null,
				groups   = null,
				groupIds = [],
				children = null,
				i        = 0,
				settings = $( '.fl-builder-col-settings' ),
				col		 = null;

			if ( isRow ) {
				groups = button.closest( '.fl-row' ).find( '.fl-row-content > .fl-col-group' );
			} else {
				groups = button.parents( '.fl-col-group' ).last();
			}

			groups.each( function() {

				group = $( this );
				children = group.find( '.fl-col-group' );
				groupIds.push( group.data( 'node' ) );
				FLBuilder._resetColumnWidths( group );

				for ( i = 0; i < children.length; i++ ) {
					FLBuilder._resetColumnWidths( children.eq( i ) );
					groupIds.push( children.eq( i ).data( 'node' ) );
				}
			} );

			if ( settings.length ) {
				col = $( '.fl-node-' + settings.attr( 'data-node' ) );
				settings.find( '#fl-field-size input' ).val( parseFloat( col[ 0 ].style.width ) );
			}

			FLBuilder.ajax({
				action		: 'reset_col_widths',
				group_id	: groupIds
			});

			FLBuilder.triggerHook( 'col-reset-widths' );
			FLBuilder._closeAllSubmenus();

			e.stopPropagation();
		},

		/**
		 * Resets the widths of all columns in a group.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _resetColumnWidths
		 * @param {Object} e The event object.
		 */
		_resetColumnWidths: function( group )
		{
			var cols  = group.find( ' > .fl-col:visible' ),
				width = 0;

			if ( 6 === cols.length ) {
				width = 16.65;
			}
			else if ( 7 === cols.length ) {
				width = 14.28;
			}
			else {
				width = Math.round( 100 / cols.length * 100 ) / 100;
			}

			cols.css( 'width', width + '%' );

			FLBuilder.triggerHook( 'didResetColumnWidths', {
				cols : cols
			} );
		},

		/* Modules
		----------------------------------------------------------*/

		/**
		 * Shows an overlay with actions when the mouse enters a module.
		 *
		 * @since 1.0
		 * @access private
		 * @method _moduleMouseenter
		 */
		_moduleMouseenter: function()
		{
			var module        = $( this ),
				moduleName    = module.attr( 'data-name' ),
				global		  = module.hasClass( 'fl-node-global' ),
				parentGlobal  = module.parents( '.fl-node-global' ).length > 0,
				group         = module.parents( '.fl-col-group' ).last(),
				groupLoading  = group.hasClass( 'fl-col-group-has-child-loading' ),
				numCols		  = module.closest( '.fl-col-group' ).find( '> .fl-col' ).length,
				col           = module.closest( '.fl-col' ),
				colFirst      = 0 === col.index(),
				colLast       = numCols === col.index() + 1,
				parentCol     = col.parents( '.fl-col' ),
				hasParentCol  = parentCol.length > 0,
				numParentCols = hasParentCol ? parentCol.closest( '.fl-col-group' ).find( '> .fl-col' ).length : 0,
				parentFirst   = hasParentCol ? 0 === parentCol.index() : false,
				parentLast    = hasParentCol ? numParentCols === parentCol.index() + 1 : false,
				contentWidth  = col.find( '> .fl-col-content' ).width(),
				row			  = module.closest('.fl-row'),
				rowIsFixedWidth = !! row.find('.fl-row-fixed-width').addBack('.fl-row-fixed-width').length,
				userCanResizeRows = FLBuilderConfig.rowResize.userCanResizeRows,
				template	  = wp.template( 'fl-module-overlay' ),
				overlay       = null;

			// Remove existing overlays.
			FLBuilder._removeColOverlays();
			FLBuilder._removeModuleOverlays();

			if ( global && parentGlobal && 'row' != FLBuilderConfig.userTemplateType ) {
				return;
			}
			else if ( module.closest( '.fl-builder-node-loading' ).length ) {
				return;
			}
			else if ( ! module.hasClass( 'fl-block-overlay-active' ) ) {

				// Append the template.
				overlay = FLBuilder._appendOverlay( module, template( {
					global 		  : global,
					moduleName	  : moduleName,
					groupLoading  : groupLoading,
					numCols		  : numCols,
					colFirst      : colFirst,
					colLast       : colLast,
					hasParentCol  : hasParentCol,
					numParentCols : numParentCols,
					parentFirst   : parentFirst,
					parentLast    : parentLast,
					contentWidth  : contentWidth,
					rowIsFixedWidth : rowIsFixedWidth,
					userCanResizeRows : userCanResizeRows,
				} ) );

				// Build the overlay overflow menu if necessary.
				FLBuilder._buildOverlayOverflowMenu( overlay );

				// Init column resizing.
				FLBuilder._initColDragResizing();
			}

			$( 'body' ).addClass( 'fl-block-overlay-muted' );
		},

		/**
		 * Removes overlays when the mouse leaves a module.
		 *
		 * @since 1.0
		 * @access private
		 * @method _moduleMouseleave
		 * @param {Object} e The event object.
		 */
		_moduleMouseleave: function(e)
		{
			var module          = $(this),
				toElement       = $(e.toElement) || $(e.relatedTarget),
				isTipTip        = toElement.is('#tiptip_holder'),
				isTipTipChild   = toElement.closest('#tiptip_holder').length > 0;

			if(isTipTip || isTipTipChild) {
				return;
			}

			FLBuilder._removeModuleOverlays();
			FLBuilder._removeColHighlightGuides();
		},

		/**
		 * Removes all module overlays from the page.
		 *
		 * @since 1.6.4
		 * @access private
		 * @method _removeModuleOverlays
		 */
		_removeModuleOverlays: function()
		{
			var modules = $('.fl-module');

			modules.removeClass('fl-block-overlay-active');
			modules.find('.fl-module-overlay').remove();
			$('body').removeClass('fl-block-overlay-muted');
			FLBuilder._closeAllSubmenus();
		},

		/**
		 * Returns a helper element for module drag operations.
		 *
		 * @since 1.0
		 * @access private
		 * @method _moduleDragHelper
		 * @param {Object} e The event object.
		 * @param {Object} item The element being dragged.
		 * @return {Object} The helper element.
		 */
		_moduleDragHelper: function(e, item)
		{
			return $('<div class="fl-builder-block-drag-helper">' + item.attr('data-name') + '</div>');
		},

		/**
		 * Callback that fires when dragging starts for a module.
		 *
		 * @since 1.9
		 * @access private
		 * @method _moduleDragStart
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_moduleDragStart: function( e, ui )
		{
			$( ui.item ).data( 'original-position', ui.item.index() );

			FLBuilder._blockDragStart( e, ui );
		},

		/**
		 * Callback for when a module drag operation completes.
		 *
		 * @since 1.0
		 * @access private
		 * @method _moduleDragStop
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_moduleDragStop: function(e, ui)
		{
			FLBuilder._blockDragStop( e, ui );

			var item     = ui.item,
				parent   = item.parent(),
				node     = null,
				position = 0,
				parentId = 0;

			// A module was dropped back into the module list.
			if ( parent.hasClass( 'fl-builder-modules' ) || parent.hasClass( 'fl-builder-widgets' ) ) {
				item.remove();
				return;
			}
			// A new module was dropped.
			else if ( item.hasClass( 'fl-builder-block' ) ) {

				// Cancel the drop if the sortable is disabled?
				if ( parent.hasClass( 'fl-sortable-disabled' ) ) {
					item.remove();
					FLBuilder._showPanel();
					return;
				}
				// A new module was dropped into a row position.
				else if ( parent.hasClass( 'fl-row-drop-target' ) ) {
					parent   = item.closest('.fl-builder-content');
					parentId = 0;
					node     = item.closest('.fl-row');
					position = parent.find( '.fl-row' ).index( node );
				}
				// A new module was dropped into a column group position.
				else if ( parent.hasClass( 'fl-col-group-drop-target' ) ) {
					parent   = item.closest( '.fl-row-content' );
					parentId = parent.closest( '.fl-row' ).attr( 'data-node' );
					node     = item.closest( '.fl-col-group' );
					position = parent.find( ' > .fl-col-group' ).index( node );
				}
				// A new module was dropped into a column position.
				else if ( parent.hasClass( 'fl-col-drop-target' ) ) {
					parent   = item.closest( '.fl-col-group' );
					parentId = parent.attr( 'data-node' );
					node     = item.closest( '.fl-col' );
					position = parent.find( ' > .fl-col' ).index( node );
				}
				// A new module was dropped into a column.
				else {
					position = parent.find( '> .fl-module, .fl-col-group, .fl-builder-block' ).index( item );
					parentId = item.closest( '.fl-col' ).attr( 'data-node' );
				}

				// Increment the position?
				if ( item.closest( '.fl-drop-target-last' ).length ) {
					position += 1;
				}

				// Add the new module.
				FLBuilder._addModule( parent, parentId, item.attr( 'data-type' ), position, item.attr( 'data-widget' ), item.attr( 'data-alias' ) );

				// Remove the drag helper.
				item.remove();
			}
			// Cancel the drop if the sortable is disabled?
			else if ( parent.hasClass( 'fl-sortable-disabled' ) ) {
				$( e.target ).append( ui.item );
				$( e.target ).children().eq( ui.item.data( 'original-position' ) ).before( ui.item );
				FLBuilder._highlightEmptyCols();
				return;
			}
			// A module was dropped into a row position.
			else if ( parent.hasClass( 'fl-row-drop-target' ) ) {
				node     = item.closest( '.fl-row' );
				position = item.closest( '.fl-builder-content' ).children( '.fl-row' ).index( node );
				position = item.closest( '.fl-drop-target-last' ).length ? position + 1 : position;
				FLBuilder._addModuleAfterNodeRender = item;
				FLBuilder._addRow( '1-col', position );
				item.remove();
			}
			// A module was dropped into a column group position.
			else if ( parent.hasClass( 'fl-col-group-drop-target' ) ) {
				node     = item.closest( '.fl-col-group' );
				position = item.closest( '.fl-row-content ').find( ' > .fl-col-group' ).index( node );
				position = item.closest( '.fl-drop-target-last' ).length ? position + 1 : position;
				FLBuilder._addModuleAfterNodeRender = item;
				FLBuilder._addColGroup( item.closest( '.fl-row' ).attr( 'data-node' ), '1-col', position );
				item.remove();
			}
			// A module was dropped into a column position.
			else if ( parent.hasClass( 'fl-col-drop-target' ) ) {
				node     = item.closest( '.fl-col' );
				position = item.closest( '.fl-col-drop-target-last' ).length ? 'after' : 'before';
				FLBuilder._addModuleAfterNodeRender = { module: item, colId: node.data( 'node' ), position: position };
				FLBuilder._addCols( node, position, '1-col', item.closest( '.fl-col-group-nested' ).length > 0 );
				item.remove();
			}
			// A module was dropped into another column.
			else {
				FLBuilder._reorderModule( item );
			}

			FLBuilder._resizeLayout();
		},

		/**
		 * Reorders a module within a column.
		 *
		 * @since 1.0
		 * @access private
		 * @method _reorderModule
		 * @param {Object} module The module element being dragged.
		 */
		_reorderModule: function(module)
		{
			var newParent = module.closest('.fl-col').attr('data-node'),
				oldParent = module.attr('data-parent'),
				nodeId    = module.attr('data-node'),
				position  = module.index();

			if(newParent == oldParent) {
				FLBuilder._reorderNode( nodeId, position );
			}
			else {
				module.attr('data-parent', newParent);
				FLBuilder._moveNode( newParent, nodeId, position );
			}
		},

		/**
		 * Callback for when the delete module button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _deleteModuleClicked
		 * @param {Object} e The event object.
		 */
		_deleteModuleClicked: function(e)
		{
			var module = $(this).closest('.fl-module'),
				result = confirm(FLBuilderStrings.deleteModuleMessage);

			if(result) {
				FLBuilder._deleteModule(module);
				FLBuilder._removeAllOverlays();
			}

			e.stopPropagation();
		},

		/**
		 * Deletes a module.
		 *
		 * @since 1.0
		 * @access private
		 * @method _deleteModule
		 * @param {Object} module A jQuery reference of the module to delete.
		 */
		_deleteModule: function(module)
		{
			var row    = module.closest('.fl-row'),
				nodeId = module.attr('data-node');

			FLBuilder.ajax({
				action: 'delete_node',
				node_id: nodeId
			});

			module.empty();
			module.remove();
			row.removeClass('fl-block-overlay-muted');
			FLBuilder._highlightEmptyCols();
			FLBuilder._removeAllOverlays();
			FLBuilder.triggerHook( 'didDeleteModule', nodeId );
		},

		/**
		 * Duplicates a module.
		 *
		 * @since 1.0
		 * @access private
		 * @method _moduleCopyClicked
		 * @param {Object} e The event object.
		 */
		_moduleCopyClicked: function(e)
		{
			var module   = $( this ).closest( '.fl-module' )
				nodeId   = module.attr( 'data-node' ),
				position = module.index() + 1,
				clone    = module.clone(),
				form	 = $( '.fl-builder-module-settings[data-node=' + nodeId + ']' ),
				settings = null;

			if ( form.length ) {
				settings = FLBuilder._getSettings( form );
				FLBuilderSettingsConfig.nodes[ nodeId ] = settings;
			}

			clone.addClass( 'fl-node-' + nodeId + '-clone fl-builder-node-clone' );
			clone.find( '.fl-block-overlay' ).remove();
			module.after( clone );

			$( 'html, body' ).animate( {
				scrollTop: clone.offset().top - 75
			}, 500 );

			FLBuilder._showNodeLoading( nodeId + '-clone' );
			FLBuilder._newModuleParent 	 = module.parent();
			FLBuilder._newModulePosition = position;

			FLBuilder.ajax({
				action: 'copy_module',
				node_id: nodeId,
				settings: settings
			}, function( response ) {
				var data = JSON.parse( response );
				data.duplicatedModule = nodeId;
				FLBuilder._moduleCopyComplete( data );
			} );

			e.stopPropagation();
		},

		/**
		 * Callback for when a module has been duplicated.
		 *
		 * @since 1.7
		 * @access private
		 * @method _moduleCopyComplete
		 * @param {Object}
		 */
		_moduleCopyComplete: function( data )
		{
			data.nodeParent   = FLBuilder._newModuleParent;
			data.nodePosition = FLBuilder._newModulePosition;

			FLBuilder._renderLayout( data, function(){

				FLBuilder.triggerHook( 'didDuplicateModule', {
					newNodeId : data.nodeId,
					oldNodeId : data.duplicatedModule
				} );

				data.nodeParent.find( '.fl-builder-node-loading' ).eq( 0 ).remove();
			} );
		},

		/**
		 * Shows the settings lightbox and loads the module settings
		 * when the module settings button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _moduleSettingsClicked
		 * @param {Object} e The event object.
		 */
		_moduleSettingsClicked: function(e)
		{
			var button   = $( this ),
				type     = button.closest( '.fl-module' ).attr( 'data-type' ),
				nodeId   = button.closest( '.fl-module' ).attr( 'data-node' ),
				parentId = button.closest( '.fl-col' ).attr( 'data-node' ),
				global 	 = button.closest( '.fl-block-overlay-global' ).length > 0;

			e.stopPropagation();

			if ( FLBuilder._colResizing ) {
				return;
			}
			if ( global && ! FLBuilderConfig.userCanEditGlobalTemplates ) {
				return;
			}

			FLBuilder._showModuleSettings( {
				type     : type,
				nodeId   : nodeId,
				parentId : parentId,
				global   : global
			} );
		},

		/**
		 * Shows the lightbox and loads the settings for a module.
		 *
		 * @since 1.0
		 * @access private
		 * @method _showModuleSettings
		 * @param {Object} data
		 * @param {Function} callback
		 */
		_showModuleSettings: function( data, callback )
		{
			var config   = FLBuilderSettingsConfig.modules[ data.type ],
				settings = data.settings ? data.settings : FLBuilderSettingsConfig.nodes[ data.nodeId ],
				head 	 = $( 'head' ),
				layout   = null;

			// Add settings CSS and JS.
			if ( -1 === $.inArray( data.type, FLBuilder._loadedModuleAssets ) ) {
				if ( '' !== config.assets.css ) {
					head.append( config.assets.css );
				}
				if ( '' !== config.assets.js ) {
					head.append( config.assets.js );
				}
				FLBuilder._loadedModuleAssets.push( data.type );
			}

			// Render the form.
			FLBuilderSettingsForms.render( {
				type	  : 'module',
				id        : data.type,
				nodeId    : data.nodeId,
				className : 'fl-builder-module-settings fl-builder-' + data.type + '-settings',
				attrs     : 'data-node="' + data.nodeId + '" data-parent="' + data.parentId + '" data-type="' + data.type + '"',
				buttons   : ! data.global ? ['save-as'] : [],
				badges    : data.global ? [ FLBuilderStrings.global ] : [],
				settings  : settings ? settings : FLBuilderSettingsConfig.defaults.modules[ data.type ],
				legacy    : data.legacy,
				helper    : FLBuilder._moduleHelpers[ data.type ],
				rules     : FLBuilder._moduleHelpers[ data.type ] ? FLBuilder._moduleHelpers[ data.type ].rules : null,
				preview   : {
					type     : 'module',
					layout   : data.layout,
					callback : function() {
						FLBuilder.triggerHook( 'didAddModule', data.nodeId );
					}
				}
			}, callback );
		},

		/**
		 * Validates the module settings and saves them if
		 * the form is valid.
		 *
		 * @since 1.0
		 * @access private
		 * @method _saveModuleClicked
		 */
		_saveModuleClicked: function()
		{
			var form      = $(this).closest('.fl-builder-settings'),
				type      = form.attr('data-type'),
				id        = form.attr('data-node'),
				helper    = FLBuilder._moduleHelpers[type],
				valid     = true;

			if(typeof helper !== 'undefined') {

				form.find('label.error').remove();
				form.validate().hideErrors();
				valid = form.validate().form();

				if(valid) {
					valid = helper.submit();
				}
			}
			if(valid) {
				FLBuilder._saveSettings();
			}
			else {
				FLBuilder._toggleSettingsTabErrors();
			}
		},

		/**
		 * Adds a new module to a column and loads the settings.
		 *
		 * @since 1.0
		 * @access private
		 * @method _addModule
		 * @param {Object} parent A jQuery reference to the new module's parent.
		 * @param {String} parentId The node id of the new module's parent.
		 * @param {String} type The type of module to add.
		 * @param {Number} position The position of the new module within its parent.
		 * @param {String} widget The type of widget if this module is a widget.
		 * @param {String} alias A module alias key if this module is an alias to another module.
		 */
		_addModule: function( parent, parentId, type, position, widget, alias )
		{
			// Show the loader.
			FLBuilder._showNodeLoadingPlaceholder( parent, position );

			// Save the new module data.
			if ( parent.hasClass( 'fl-col-group' ) ) {
				FLBuilder._newModuleParent 	 = null;
				FLBuilder._newModulePosition = 0;
			}
			else {
				FLBuilder._newModuleParent 	 = parent;
				FLBuilder._newModulePosition = position;
			}

			// Send the request.
			FLBuilder.ajax( {
				action          : 'render_new_module',
				parent_id       : parentId,
				type            : type,
				position        : position,
				node_preview    : 1,
				widget          : typeof widget === 'undefined' ? '' : widget,
				alias           : typeof alias === 'undefined' ? '' : alias
			}, FLBuilder._addModuleComplete );
		},

		/**
		 * Shows the settings lightbox and sets the content when
		 * the module settings have finished loading.
		 *
		 * @since 1.0
		 * @access private
		 * @method _addModuleComplete
		 * @param {String} response The JSON encoded response.
		 */
		_addModuleComplete: function( response )
		{
			var data = JSON.parse( response );

			// Setup a preview layout if we have one.
			if ( data.layout ) {
				data.layout.nodeParent 	 = FLBuilder._newModuleParent;
				data.layout.nodePosition = FLBuilder._newModulePosition;
			}

			// Render the module if a settings form is already open.
			if ( $( 'form.fl-builder-settings' ).length ) {
				if ( data.layout ) {
					FLBuilder._renderLayout( data.layout );
				}
			} else {
				FLBuilder._showModuleSettings( data, function() {
					$( '.fl-builder-module-settings' ).data( 'new-module', '1' );
				} );
			}
		},

		/**
		 * Registers a helper class for a module's settings.
		 *
		 * @since 1.0
		 * @method registerModuleHelper
		 * @param {String} type The type of module.
		 * @param {Object} obj The module helper.
		 */
		registerModuleHelper: function(type, obj)
		{
			var defaults = {
				rules: {},
				init: function(){},
				submit: function(){ return true; },
				preview: function(){}
			};

			FLBuilder._moduleHelpers[type] = $.extend({}, defaults, obj);
		},

		/**
		 * Deprecated. Use the public method registerModuleHelper instead.
		 *
		 * @since 1.0
		 * @access private
		 * @method _registerModuleHelper
		 * @param {String} type The type of module.
		 * @param {Object} obj The module helper.
		 */
		_registerModuleHelper: function(type, obj)
		{
			FLBuilder.registerModuleHelper(type, obj);
		},

		/* Node Templates
		----------------------------------------------------------*/

		/**
		 * Saves a node's settings and shows the node template settings
		 * when the Save As button is clicked.
		 *
		 * @since 1.6.3
		 * @access private
		 * @method _showNodeTemplateSettings
		 * @param {Object} e An event object.
		 */
		_showNodeTemplateSettings: function( e )
		{
			var form     = $( '.fl-builder-settings-lightbox .fl-builder-settings' ),
				nodeId   = form.attr( 'data-node' ),
				title    = FLBuilderStrings.saveModule;

			if ( form.hasClass( 'fl-builder-row-settings' ) ) {
				title = FLBuilderStrings.saveRow;
			}

			if ( ! FLBuilder._triggerSettingsSave( false, false, false ) ) {
				return false;
			}

			FLBuilderSettingsForms.render( {
				id        : 'node_template',
				nodeId    : nodeId,
				title     : title,
				attrs     : 'data-node="' + nodeId + '"',
				className : 'fl-builder-node-template-settings',
				rules     : {
					name: {
						required: true
					}
				}
			}, function() {
				if ( ! FLBuilderConfig.userCanEditGlobalTemplates ) {
					$( '#fl-field-global' ).hide();
				}
			} );
		},

		/**
		 * Saves a node as a template when the save button is clicked.
		 *
		 * @since 1.6.3
		 * @access private
		 * @method _saveNodeTemplate
		 */
		_saveNodeTemplate: function()
		{
			var form   = $( '.fl-builder-node-template-settings' ),
				nodeId = form.attr( 'data-node' ),
				valid  = form.validate().form();

			if ( valid ) {

				FLBuilder._showNodeLoading( nodeId );

				FLBuilder.ajax({
					action	 : 'save_node_template',
					node_id  : nodeId,
					settings : FLBuilder._getSettings( form )
				}, function( response ) {
					FLBuilder._saveNodeTemplateComplete( response );
					FLBuilder._hideNodeLoading( nodeId );
				} );

				FLBuilder._lightbox.close();
			}
		},

		/**
		 * Callback for when a node template has been saved.
		 *
		 * @since 1.6.3
		 * @access private
		 * @method _saveNodeTemplateComplete
		 */
		_saveNodeTemplateComplete: function( response )
		{
			var data 		   = JSON.parse( response ),
				panel 		   = $( '.fl-builder-saved-' + data.type + 's' ),
				blocks 		   = panel.find( '.fl-builder-block' ),
				block   	   = null,
				text    	   = '',
				name    	   = data.name.toLowerCase(),
				i			   = 0,
				template 	   = wp.template( 'fl-node-template-block' ),
				newLibraryItem = {
					name: data.name,
					isGlobal: data.global,
					content: data.type,
					id: data.id,
					postID: data.postID,
					kind: "template",
					type: "user",
					link: data.link,
					category: {
						uncategorized: FLBuilderStrings.uncategorized
					}
				};

			FLBuilderConfig.contentItems.template.push(newLibraryItem);
			FLBuilder.triggerHook('contentItemsChanged');

			// Update the layout for global templates.
			if ( data.layout ) {
				FLBuilder._renderLayout( data.layout );
				FLBuilder.triggerHook( 'didSaveGlobalNodeTemplate', data.config );
			}

			// Add the new template to the builder panel.
			if ( 0 === blocks.length ) {
				panel.append( template( data ) );
			}
			else {

				for ( ; i < blocks.length; i++ ) {

					block = blocks.eq( i );
					text  = block.text().toLowerCase().trim();

					if ( 0 === i && name < text ) {
						panel.prepend( template( data ) );
						break;
					}
					else if ( name < text ) {
						block.before( template( data ) );
						break;
					}
					else if ( blocks.length - 1 === i ) {
						panel.append( template( data ) );
						break;
					}
				}
			}

			// Remove the no templates placeholder.
			panel.find( '.fl-builder-block-no-node-templates' ).remove();
		},

		/**
		 * Callback for when a node template drag from the
		 * builder panel has stopped.
		 *
		 * @since 1.6.3
		 * @access private
		 * @method _nodeTemplateDragStop
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_nodeTemplateDragStop: function( e, ui )
		{
			FLBuilder._blockDragStop( e, ui );

			var item   		= ui.item,
				parent 		= item.parent(),
				parentId	= null,
				position 	= 0,
				node        = null,
				action 		= '',
				callback	= null;

			// A node template was dropped back into the templates list.
			if ( parent.hasClass( 'fl-builder-blocks-section-content' ) ) {
				item.remove();
				return;
			}
			// A saved row was dropped.
			else if ( item.hasClass( 'fl-builder-block-saved-row' ) || item.hasClass( 'fl-builder-block-row-template' ) ) {
				node     = item.closest( '.fl-row' );
				position = ! node.length ? 0 : $( FLBuilder._contentClass + ' .fl-row' ).index( node );
				position = parent.hasClass( 'fl-drop-target-last' ) ? position + 1 : position;
				parentId = null;
				action	 = 'render_new_row';
				callback = FLBuilder._addRowComplete;
				FLBuilder._newRowPosition = position;
				FLBuilder._showNodeLoadingPlaceholder( $( FLBuilder._contentClass ), position );
			}
			// A saved module was dropped.
			else if ( item.hasClass( 'fl-builder-block-saved-module' ) || item.hasClass( 'fl-builder-block-module-template' ) ) {

				action	 = 'render_new_module';
				callback = FLBuilder._addModuleComplete;

				// Cancel the drop if the sortable is disabled?
				if ( parent.hasClass( 'fl-sortable-disabled' ) ) {
					item.remove();
					FLBuilder._showPanel();
					return;
				}
				// Dropped into a row position.
				else if ( parent.hasClass( 'fl-row-drop-target' ) ) {
					parent   = item.closest('.fl-builder-content');
					parentId = 0;
					position = parent.find( '.fl-row' ).index( item.closest('.fl-row') );
				}
				// Dropped into a column group position.
				else if ( parent.hasClass( 'fl-col-group-drop-target' ) ) {
					parent   = item.closest( '.fl-row-content' );
					parentId = parent.closest( '.fl-row' ).attr( 'data-node' );
					position = parent.find( ' > .fl-col-group' ).index( item.closest( '.fl-col-group' ) );
				}
				// Dropped into a column position.
				else if ( parent.hasClass( 'fl-col-drop-target' ) ) {
					parent   = item.closest('.fl-col-group');
					position = parent.children('.fl-col').index( item.closest('.fl-col') );
					parentId = parent.attr('data-node');
				}
				// Dropped into a column.
				else {
					position = parent.children( '.fl-module, .fl-builder-block' ).index( item );
					parentId = item.closest( '.fl-col' ).attr( 'data-node' );
				}

				// Increment the position?
				if ( item.closest( '.fl-drop-target-last' ).length ) {
					position += 1;
				}

				// Save the new module data.
				if ( parent.hasClass( 'fl-col-group' ) ) {
					FLBuilder._newModuleParent 	 = null;
					FLBuilder._newModulePosition = 0;
				}
				else {
					FLBuilder._newModuleParent 	 = parent;
					FLBuilder._newModulePosition = position;
				}

				// Show the loader.
				FLBuilder._showNodeLoadingPlaceholder( parent, position );
			}

			// Apply and render the node template.
			FLBuilder.ajax({
				action	 	  : action,
				template_id   : item.attr( 'data-id' ),
				template_type : item.attr( 'data-type' ),
				parent_id     : parentId,
				position 	  : position
			}, function( response ) {
				if ( action.indexOf( 'row' ) > -1 ) {
					var data = JSON.parse( response );
					FLBuilder.triggerHook( 'didApplyRowTemplateComplete', data.config );
					callback( data.layout );
				} else {
					callback( response );
				}
			} );

			// Remove the helper.
			item.remove();
		},

		/**
		 * Launches the builder in a new tab to edit a user
		 * defined node template when the edit link is clicked.
		 *
		 * @since 1.6.3
		 * @access private
		 * @method _editUserTemplateClicked
		 * @param {Object} e The event object.
		 */
		_editNodeTemplateClicked: function( e )
		{
			e.preventDefault();
			e.stopPropagation();

			window.open( $( this ).attr( 'href' ) );
		},

		/**
		 * Fires when the delete node template icon is clicked in the builder's panel.
		 *
		 * @since 1.6.3
		 * @access private
		 * @method _deleteNodeTemplateClicked
		 * @param {Object} e The event object.
		 */
		_deleteNodeTemplateClicked: function( e )
		{
			var button 		= $( e.target ),
				section 	= button.closest( '.fl-builder-blocks-section' ),
				panel   	= section.find( '.fl-builder-blocks-section-content' ),
				blocks  	= panel.find( '.fl-builder-block' ),
				block  		= button.closest( '.fl-builder-block' ),
				global 		= block.hasClass( 'fl-builder-block-global' ),
				callback 	= global ? FLBuilder._updateLayout : undefined,
				message     = global ? FLBuilderStrings.deleteGlobalTemplate : FLBuilderStrings.deleteTemplate,
				index       = null;

			if ( confirm( message ) ) {

				// Delete the UI block.
				block.remove();

				// Add the no templates placeholder?
				if ( 1 === blocks.length ) {
					if ( block.hasClass( 'fl-builder-block-saved-row' ) ) {
						panel.append( '<span class="fl-builder-block-no-node-templates">' + FLBuilderStrings.noSavedRows + '</span>' );
					}
					else {
						panel.append( '<span class="fl-builder-block-no-node-templates">' + FLBuilderStrings.noSavedModules + '</span>' );
					}
				}

				// Show the loader?
				if ( block.hasClass( 'fl-builder-block-global' ) ) {
					FLBuilder.showAjaxLoader();
				}

				// Delete the template.
				FLBuilder.ajax({
					action 	     : 'delete_node_template',
					template_id  : block.attr( 'data-id' )
				}, callback);

				// Remove the item from library
				index = _.findIndex(FLBuilderConfig.contentItems.template, {
					id: block.attr('data-id'),
					type: 'user'
				});

				FLBuilderConfig.contentItems.template.splice(index, 1);
				FLBuilder.triggerHook('contentItemsChanged');
			}
		},

		/* Settings
		----------------------------------------------------------*/

		/**
		 * Initializes logic for settings forms.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initSettingsForms
		 */
		_initSettingsForms: function()
		{
			FLBuilder._initCodeFields();
			FLBuilder._initColorPickers();
			FLBuilder._initSelectFields();
			FLBuilder._initEditorFields();
			FLBuilder._initMultipleFields();
			FLBuilder._initAutoSuggestFields();
			FLBuilder._initLinkFields();
			FLBuilder._initFontFields();
			FLBuilder._initOrderingFields();
			FLBuilder._initTimezoneFields();
			FLBuilder._focusFirstSettingsControl();
			FLBuilder._lightbox._resizeEditors();

			$( '.fl-builder-settings-fields' ).css( 'visibility', 'visible' );

			/**
		     * Hook for settings form init.
		     */
		    FLBuilder.triggerHook('settings-form-init');
		},

		/**
		 * Destroys all active settings forms.
		 *
		 * @since 2.0
		 * @access private
		 * @method _destroySettingsForms
		 */
		_destroySettingsForms: function()
		{
			FLBuilder._destroyEditorFields();
		},

		/**
		 * Inserts settings forms rendered with PHP. This method is only around for
		 * backwards compatibility with third party settings forms that are
		 * still being rendered via AJAX. Going forward, all settings forms
		 * should be rendered on the frontend using FLBuilderSettingsForms.render.
		 *
		 * @since 1.0
		 * @access private
		 * @method _setSettingsFormContent
		 * @param {String} html
		 */
		_setSettingsFormContent: function( html )
		{
			$( '.fl-legacy-settings' ).remove();
			$( 'body' ).append( html );
		},

		/**
		 * Shows the content for a settings form tab when it is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _settingsTabClicked
		 * @param {Object} e The event object.
		 */
		_settingsTabClicked: function(e)
		{
			var tab  = $( this ),
				form = tab.closest( '.fl-builder-settings' ),
				id   = tab.attr( 'href' ).split( '#' ).pop();

			FLBuilder._resetSettingsTabsState();

			form.find( '.fl-builder-settings-tab' ).removeClass( 'fl-active' );
			form.find( '#' + id ).addClass( 'fl-active' );
			form.find( '.fl-builder-settings-tabs .fl-active' ).removeClass( 'fl-active' );
			form.find( 'a[href*=' + id + ']' ).addClass( 'fl-active' );

			FLBuilder._focusFirstSettingsControl();

			e.preventDefault();
		},

		_resetSettingsTabsState: function() {
			var $lightbox = $('.fl-lightbox:visible');

			FLBuilder._hideTabsOverflowMenu();

			$lightbox.find('.fl-builder-settings-tabs .fl-active').removeClass('fl-active');
			$lightbox.find('.fl-builder-settings-tabs-overflow-menu .fl-active').removeClass('fl-active');
			$lightbox.find('.fl-contains-active').removeClass('fl-contains-active');
		},

		/**
		* Measures tabs and adds extra items to overflow menu.
		*
		* @since 2.0
		* @access private
		* @return void
		* @method _settingsTabsToOverflowMenu
		*/
		_calculateSettingsTabsOverflow: function() {

			var $lightbox = $('.fl-lightbox:visible'),
				lightboxWidth = $lightbox.outerWidth(),
				isSlim = $lightbox.hasClass('fl-lightbox-width-slim'),
				$tabWrap = $lightbox.find('.fl-builder-settings-tabs'),
				$overflowMenu = $lightbox.find('.fl-builder-settings-tabs-overflow-menu'),
				$overflowMenuBtn = $lightbox.find('.fl-builder-settings-tabs-more'),
				$tabs = $tabWrap.find('a'),
				shouldEjectRemainingTabs = false,
				tabsAreaWidth = lightboxWidth - 60, /* 60 is size of "more" btn */
				tabsWidthTotal = 0,
				tabPadding = isSlim ? ( 8 * 2 ) : ( 15 * 2 );

			// Reset the menu
			$overflowMenu.html('');
			FLBuilder._hideTabsOverflowMenu();

			$tabs.removeClass('fl-overflowed');

			// Measure each tab
			$tabs.each(function() {

				if ( !$(this).is(":visible") ) {
					return true;
				}

				// Calculate size until too wide for tab area.
				if ( !shouldEjectRemainingTabs ) {

					// Width of text + padding + bumper space
						var currentTabWidth = $(this).textWidth() + tabPadding + 12;
					tabsWidthTotal += currentTabWidth;

					if ( tabsWidthTotal >= tabsAreaWidth ) {
						shouldEjectRemainingTabs = true;
					} else {
					}
				}

				if ( shouldEjectRemainingTabs ) {

					var label = $(this).html(),
						handle = $(this).attr('href'),
						classAttr = "";

					if ( $(this).hasClass('fl-active') ) {
						classAttr = 'fl-active';
					}
					if ( $(this).hasClass('error') ) {
						classAttr += ' error';
					}
					if ( classAttr !== '' ) {
						classAttr = 'class="' + classAttr + '"';
					}

					var $item = $('<a href="' + handle + '" ' + classAttr + '>' + label + '</a>');

					$overflowMenu.append( $item );
					$(this).addClass('fl-overflowed');
				} else {

					$(this).removeClass('fl-overflowed');
				}

			});

			if ( shouldEjectRemainingTabs ) {
				$lightbox.addClass('fl-lightbox-has-tab-overflow');
			} else {
				$lightbox.removeClass('fl-lightbox-has-tab-overflow');
			}

			if ( $overflowMenu.find('.fl-active').length > 0 ) {
				$overflowMenuBtn.addClass('fl-contains-active');
			} else {
				$overflowMenuBtn.removeClass('fl-contains-active');
			}

			if ( $overflowMenu.find('.error').length > 0 ) {
				$overflowMenuBtn.addClass('fl-contains-errors');
			} else {
				$overflowMenuBtn.removeClass('fl-contains-errors');
			}
		},

		/**
		* Trigger the orignal tab when a menu item is clicked.
		*
		* @since 2.0
		* @var {Event} e
		* @return void
		*/
		_settingsTabsToOverflowMenuItemClicked: function(e) {
			var $item = $(e.currentTarget),
				handle = $item.attr('href'),
				$tabsWrap = $item.closest('.fl-lightbox-header-wrap').find('.fl-builder-settings-tabs'),
				$tab = $tabsWrap.find('a[href="' + handle + '"]'),
				$moreBtn = $tabsWrap.find('.fl-builder-settings-tabs-more');

			FLBuilder._resetSettingsTabsState();
			$tab.trigger('click');
			$item.addClass('fl-active');
			$moreBtn.addClass('fl-contains-active');
			FLBuilder._hideTabsOverflowMenu();
			e.preventDefault();
		},

		/**
		* Check if overflow menu contains any tabs
		*
		* @since 2.0
		* @return bool
		*/
		_hasOverflowTabs: function() {
			var $lightbox = $('.fl-lightbox:visible'),
				$tabs = $lightbox.find('.fl-builder-settings-tabs-overflow-menu a');

			if ( $tabs.length > 0 ) {
				return true;
			} else {
				return false;
			}
		},

		/**
		* Show the overflow menu
		*
		*/
		_showTabsOverflowMenu: function() {

			if ( ! FLBuilder._hasOverflowTabs() ) return;

			var $lightbox = $('.fl-lightbox:visible');
			$lightbox.find('.fl-builder-settings-tabs-overflow-menu').css('display', 'flex');
			$lightbox.find('.fl-builder-settings-tabs-overflow-click-mask').show();
			this.isShowingSettingsTabsOverflowMenu = true;
		},

		/**
		* Hide the overflow menu
		*/
		_hideTabsOverflowMenu: function() {
			var $lightbox = $('.fl-lightbox:visible');
			$lightbox.find('.fl-builder-settings-tabs-overflow-menu').css('display', 'none');
			$lightbox.find('.fl-builder-settings-tabs-overflow-click-mask').hide();
			this.isShowingSettingsTabsOverflowMenu = false;
		},

		/**
		* Toggle the overflow menu
		*/
		_toggleTabsOverflowMenu: function( e ) {
			if ( FLBuilder.isShowingSettingsTabsOverflowMenu ) {
				FLBuilder._hideTabsOverflowMenu();
			} else {
				FLBuilder._showTabsOverflowMenu();
			}
			e.stopPropagation();
		},

		/**
		 * Reverts an active preview and hides the lightbox when
		 * the cancel button of a settings lightbox is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _settingsCancelClicked
		 * @param {Object} e The event object.
		 */
		_settingsCancelClicked: function(e)
		{
			var nestedLightbox = $( '.fl-builder-lightbox[data-parent]' ),
				moduleSettings = $('.fl-builder-module-settings'),
				existingNodes  = null,
				previewModule  = null,
				previewCol     = null,
				existingCol    = null;

			// Close a nested settings lightbox.
			if ( nestedLightbox.length > 0 ) {
				FLBuilder._closeNestedSettings();
				return;
			}
			// Delete a new module preview?
			else if(moduleSettings.length > 0 && typeof moduleSettings.data('new-module') != 'undefined') {

				existingNodes = $(FLBuilder.preview.state.html);
				previewModule = $('.fl-node-' + moduleSettings.data('node'));
				previewCol    = previewModule.closest('.fl-col');
				existingCol   = existingNodes.find('.fl-node-' + previewCol.data('node'));

				if(existingCol.length > 0) {
					FLBuilder._deleteModule(previewModule);
				}
				else {
					FLBuilder._deleteCol(previewCol);
				}
			}
			// Do a standard preview revert.
			else if( FLBuilder.preview ) {
				FLBuilder.preview.revert();
			}

			FLBuilder.preview = null;
			FLLightbox.closeParent(this);
		},

		/**
		 * Focus the first visible control in a settings panel
		 *
		 * @since 2.0
		 */
		_focusFirstSettingsControl: function() {
			var form  = $( '.fl-builder-settings:visible' ),
				tab   = form.find( '.fl-builder-settings-tab.fl-active' ),
				field = tab.find('.fl-field').first(),
				input = field.find( 'input:not([type="hidden"]), textarea, select, button, a, .fl-editor-field' ).first();

			// TinyMCE fields
			if ( 'undefined' !== typeof tinyMCE && input.hasClass('fl-editor-field') ) {
				var id = input.find('textarea.wp-editor-area').attr('id');
				tinyMCE.get( id ).focus();

			// Everybody else
			} else {
				setTimeout(function() {
					input.focus().css('animation-name', 'fl-grab-attention');
				}, 300 );
			}
			// Grab attention
			field.css('animation-name', 'fl-grab-attention');
			field.on('animationend', function() {
				field.css('animation-name', '');
			});
		},

		/**
		 * Initializes validation logic for a settings form.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initSettingsValidation
		 * @param {Object} rules The validation rules object.
		 * @param {Object} messages Custom messages to show for invalid fields.
		 */
		_initSettingsValidation: function(rules, messages)
		{
			var form = $('.fl-builder-settings').last();

			form.validate({
				ignore: '.fl-ignore-validation',
				rules: rules,
				messages: messages,
				errorPlacement: FLBuilder._settingsErrorPlacement
			});
		},

		/**
		 * Places a validation error after the invalid field.
		 *
		 * @since 1.0
		 * @access private
		 * @method _settingsErrorPlacement
		 * @param {Object} error The error element.
		 * @param {Object} element The invalid field.
		 */
		_settingsErrorPlacement: function(error, element)
		{
			error.appendTo(element.parent());
		},

		/**
		 * Resets all tab error icons and then shows any for tabs
		 * that have fields with errors.
		 *
		 * @since 1.0
		 * @access private
		 * @method _toggleSettingsTabErrors
		 */
		_toggleSettingsTabErrors: function()
		{
			var form      = $('.fl-builder-settings:visible'),
				tabs      = form.find('.fl-builder-settings-tab'),
				tab       = null,
				tabErrors = null,
				i         = 0;

			for( ; i < tabs.length; i++) {

				tab = tabs.eq(i);
				tabErrors = tab.find('label.error');
				tabLink = form.find('.fl-builder-settings-tabs a[href*='+ tab.attr('id') +']');
				tabLink.find('.fl-error-icon').remove();
				tabLink.removeClass('error');

				if(tabErrors.length > 0) {
					tabLink.append('<span class="fl-error-icon"></span>');
					tabLink.addClass('error');
				}
			}

			FLBuilder._calculateSettingsTabsOverflow();
		},

		/**
		 * Returns an object with key/value pairs for all fields
		 * within a settings form.
		 *
		 * @since 1.0
		 * @access private
		 * @method _getSettings
		 * @param {Object} form The settings form element.
		 * @return {Object} The settings object.
		 */
		_getSettings: function( form )
		{
			FLBuilder._updateEditorFields();

			var data     	= form.serializeArray(),
				i        	= 0,
				k        	= 0,
				value	 	= '',
				name     	= '',
				key      	= '',
				keys      	= [],
				matches	 	= [],
				settings 	= {};

			// Loop through the form data.
			for ( i = 0; i < data.length; i++ ) {

				value = data[ i ].value.replace( /\r/gm, '' );

				// Don't save text editor textareas.
				if ( data[ i ].name.indexOf( 'flrich' ) > -1 ) {
					continue;
				}
				// Support foo[]... setting keys.
				else if ( data[ i ].name.indexOf( '[' ) > -1 ) {

					name 	= data[ i ].name.replace( /\[(.*)\]/, '' );
					key  	= data[ i ].name.replace( name, '' );
					keys	= [];
					matches = key.match( /\[[^\]]*\]/g );

					// Remove [] from the keys.
					for ( k = 0; k < matches.length; k++ ) {

						if ( '[]' == matches[ k ] ) {
							continue;
						}

						keys.push( matches[ k ].replace( /\[|\]/g, '' ) );
					}

					// foo[][key][key]
					if ( key.match( /\[\]\[[^\]]*\]\[[^\]]+\]/ ) ) {

						if ( 'undefined' == typeof settings[ name ] ) {
							settings[ name ] = {};
						}
						if ( 'undefined' == typeof settings[ name ][ keys[ 0 ] ] ) {
							settings[ name ][ keys[ 0 ] ] = {};
						}
						if ( 'undefined' == typeof settings[ name ][ keys[ 0 ] ][ keys[ 1 ] ] ) {
							settings[ name ][ keys[ 0 ] ][ keys[ 1 ] ] = {};
						}

						settings[ name ][ keys[ 0 ] ][ keys[ 1 ] ] = value;

					}
					// foo[][key][]
					else if ( key.match( /\[\]\[[^\]]*\]\[\]/ ) ) {

						if ( 'undefined' == typeof settings[ name ] ) {
							settings[ name ] = {};
						}
						if ( 'undefined' == typeof settings[ name ][ keys[ 0 ] ] ) {
							settings[ name ][ keys[ 0 ] ] = [];
						}

						settings[ name ][ keys[ 0 ] ].push( value );
					}
					// foo[][key]
					else if ( key.match( /\[\]\[[^\]]*\]/ ) ) {

						if ( 'undefined' == typeof settings[ name ] ) {
							settings[ name ] = {};
						}

						settings[ name ][ keys[ 0 ] ] = value;

					}
					// foo[]
					else if ( key.match( /\[\]/ ) ) {

						if ( 'undefined' == typeof settings[ name ] ) {
							settings[ name ] = [];
						}

						settings[ name ].push( value );
					}
				}
				// Standard name/value pair.
				else {
					settings[ data[ i ].name ] = value;
				}
			}

			// Update auto suggest values.
			for ( key in settings ) {

				if ( 'undefined' != typeof settings[ 'as_values_' + key ] ) {

					settings[ key ] = $.grep(
						settings[ 'as_values_' + key ].split( ',' ),
						function( n ) {
							return n !== '';
						}
					).join( ',' );

					try {
						delete settings[ 'as_values_' + key ];
					}
					catch( e ) {}
				}
			}

			// Merge in the original settings in case legacy fields haven't rendered yet.
			settings = $.extend( {}, FLBuilder._getOriginalSettings( form ), settings );

			// Return the settings.
			return settings;
		},

		/**
		 * Returns JSON encoded settings to be used in HTML form elements.
		 *
		 * @since 2.0
		 * @access private
		 * @method _getSettingsJSONForHTML
		 * @param {Object} settings The settings object.
		 * @return {String} The settings JSON.
		 */
		_getSettingsJSONForHTML: function( settings )
		{
			return JSON.stringify( settings ).replace( /\'/g, '&#39;' ).replace( '<wbr \/>', '<wbr>' );
		},

		/**
		 * Returns the original settings for a settings form. This is only
		 * used to work with legacy PHP settings fields.
		 *
		 * @since 2.0
		 * @access private
		 * @method _getOriginalSettings
		 * @param {Object} form The settings form element.
		 * @param {Boolean} all Whether to include all of the settings or just those with fields.
		 * @return {Object} The settings object.
		 */
		_getOriginalSettings: function( form, all )
		{
			var original = form.find( '.fl-builder-settings-json' ),
				settings = {};

			if ( original.length ) {

				original = JSON.parse( original.val().replace( /&#39;/g, "'" ) );

				for ( key in original ) {
					if ( $( '#fl-field-' + key ).length || all ) {
						settings[ key ] = original[ key ];
					}
				}
			}

			return settings;
		},

		/**
		 * Saves the settings for the current settings form, shows
		 * the loader and hides the lightbox.
		 *
		 * @since 1.0
		 * @access private
		 * @method _saveSettings
		 * @param {Boolean} render Whether the layout should render after saving.
		 */
		_saveSettings: function( render )
		{
			var form      = $( '.fl-builder-settings-lightbox .fl-builder-settings' ),
				newModule = form.data( 'new-module' ),
				nodeId    = form.attr( 'data-node' ),
				settings  = FLBuilder._getSettings( form ),
				preview   = FLBuilder.preview;

			// Default to true for render.
			if ( _.isUndefined( render ) || ! _.isBoolean( render ) ) {
				render = true;
			}

			// Only proceed if the settings have changed.
			if ( preview && ! preview._settingsHaveChanged() && _.isUndefined( newModule ) ) {
				FLBuilder._lightbox.close();
				return;
			}

			// Show the loader.
			FLBuilder._showNodeLoading( nodeId );

			// Update the settings config object.
			FLBuilderSettingsConfig.nodes[ nodeId ] = settings;

			// Make the AJAX call.
			FLBuilder.ajax( {
				action          : 'save_settings',
				node_id         : nodeId,
				settings        : settings
			}, FLBuilder._saveSettingsComplete.bind( this, render, preview ) );

			// Trigger the hook.
			FLBuilder.triggerHook( 'didSaveNodeSettings', {
				nodeId   : nodeId,
				settings : settings
			} );

			// Close the lightbox.
			FLBuilder._lightbox.close();
		},

		/**
		 * Renders a new layout when the settings for the current
		 * form have finished saving.
		 *
		 * @since 1.0
		 * @access private
		 * @method _saveSettingsComplete
		 * @param {Boolean} render Whether the layout should render after saving.
		 * @param {Object} preview The preview object for this settings save.
		 * @param {String} response The layout data from the server.
		 */
		_saveSettingsComplete: function( render, preview, response )
		{
			var data 	 = JSON.parse( response ),
				callback = function() {
					if( preview && data.layout.partial && data.layout.nodeId === preview.nodeId ) {
						preview.clear();
						preview = null;
					}
				};

			if ( true === render ) {
				FLBuilder._renderLayout( data.layout, callback );
			} else {
				callback();
			}

			FLBuilder.triggerHook( 'didSaveNodeSettingsComplete', {
				nodeId   : data.node_id,
				settings : data.settings
			} );
		},

		/**
		 * Triggers a click on the settings save button so all save
		 * logic runs for any form that is currently in the lightbox.
		 *
		 * @since 2.0
		 * @access private
		 * @method _triggerSettingsSave
		 * @param {Boolean} disableClose
		 * @param {Boolean} showAlert
		 * @param {Boolean} destroy
		 * @return {Boolean}
		 */
		_triggerSettingsSave: function( disableClose, showAlert, destroy )
		{
			var form	   = FLBuilder._lightbox._node.find( 'form.fl-builder-settings' ),
				lightboxId = FLBuilder._lightbox._node.data( 'instance-id' ),
				lightbox   = FLLightbox._instances[ lightboxId ],
				nested     = $( '.fl-lightbox-wrap[data-parent]:visible' ),
				changed    = false,
				valid	   = true;

			disableClose = _.isUndefined( disableClose ) ? false : disableClose;
			showAlert 	 = _.isUndefined( showAlert ) ? false : showAlert;
			destroy 	 = _.isUndefined( destroy ) ? true : destroy;

			if ( form.length ) {

				// Save any nested settings forms.
				if ( nested.length ) {

					// Save the form.
					nested.find( '.fl-builder-settings-save' ).trigger( 'click' );

					// Don't proceed if not saved.
					if ( nested.find( 'label.error' ).length || $( '.fl-builder-alert-lightbox:visible' ).length ) {
						valid = false;
					}
				}

				// Do a validation check of the main form to see if we should save.
				if ( valid && ! form.validate().form() ) {
					valid = false;
				}

				// Check to see if the main settings have changed.
				changed = FLBuilderSettingsForms.settingsHaveChanged();

				// Save the main settings form if it has changes.
				if ( valid && changed ) {

					// Disable lightbox close?
					if ( disableClose ) {
						lightbox.disableClose();
					}

					// Save the form.
					form.find( '.fl-builder-settings-save' ).trigger( 'click' );

					// Enable lightbox close if it was disabled.
					if ( disableClose ) {
						lightbox.enableClose();
					}

					// Don't proceed if not saved.
					if ( form.find( 'label.error' ).length || $( '.fl-builder-alert-lightbox:visible' ).length ) {
						valid = false;
					}
				}

				// Destroy the settings form?
				if ( destroy ) {

					FLBuilder._destroySettingsForms();

					// Destroy the preview if settings don't have changes.
					if ( ! changed && FLBuilder.preview ) {
						FLBuilder.preview.clear();
						FLBuilder.preview = null;
					}
				}

				// Close the main lightbox if it doesn't have changes and closing isn't disabled.
				if ( ! changed && ! disableClose ) {
					lightbox.close();
				}
			}

			if ( ! valid ) {
				FLBuilder.triggerHook( 'didFailSettingsSave' );
				FLBuilder._toggleSettingsTabErrors();
				if ( showAlert && ! $( '.fl-builder-alert-lightbox:visible' ).length ) {
					FLBuilder.alert( FLBuilderStrings.settingsHaveErrors );
				}
			}

			return valid;
		},

		/**
		 * Refreshes preview references for a node's settings panel
		 * in case they have been broken by work in the layout.
		 *
		 * @since 2.0
		 * @access private
		 * @method _refreshSettingsPreviewReference
		 */
		_refreshSettingsPreviewReference: function()
		{
			if ( FLBuilder.preview ) {
				FLBuilder.preview._initElementsAndClasses();
			}
		},

		/* Nested Settings Forms
		----------------------------------------------------------*/

		/**
		 * Opens a nested settings lightbox.
		 *
		 * @since 1.10
		 * @access private
		 * @method _openNestedSettings
		 * @return object The settings lightbox object.
		 */
		_openNestedSettings: function( settings )
		{
			if ( settings.className && -1 === settings.className.indexOf( 'fl-builder-settings-lightbox' ) ) {
				settings.className += ' fl-builder-settings-lightbox';
			}

			settings = $.extend( {
				className: 'fl-builder-lightbox  fl-builder-settings-lightbox',
				destroyOnClose: true,
				resizable: true
			}, settings );

			var parentBoxWrap  = $( '.fl-lightbox-wrap:visible' ),
				parentBox      = parentBoxWrap.find( '.fl-lightbox' ),
				nestedBoxObj   = new FLLightbox( settings ),
				nestedBoxWrap  = nestedBoxObj._node,
				nestedBox      = nestedBoxWrap.find( '.fl-lightbox' );

			parentBoxWrap.hide();
			nestedBoxWrap.attr( 'data-parent', parentBoxWrap.attr( 'data-instance-id' ) );
			nestedBox.attr( 'style', parentBox.attr( 'style' ) );
			nestedBoxObj.on( 'resized', FLBuilder._calculateSettingsTabsOverflow );
			nestedBoxObj.open( '<div class="fl-builder-lightbox-loading"></div>' );

			return nestedBoxObj;
		},

		/**
		 * Opens the active nested settings lightbox.
		 *
		 * @since 1.10
		 * @access private
		 * @method _closeNestedSettings
		 */
		_closeNestedSettings: function()
		{
			var nestedBoxWrap = $( '.fl-builder-lightbox[data-parent]:visible' ),
				nestedBox     = nestedBoxWrap.find( '.fl-lightbox' ),
				nestedBoxId   = nestedBoxWrap.attr( 'data-instance-id' ),
				nestedBoxObj  = FLLightbox._instances[ nestedBoxId ],
				parentBoxId   = nestedBoxWrap.attr( 'data-parent' ),
				parentBoxWrap = $( '[data-instance-id="' + parentBoxId + '"]' ),
				parentBox     = parentBoxWrap.find( '.fl-lightbox' ),
				parentBoxForm = parentBoxWrap.find('form'),
				parentBoxObj  = FLLightbox._instances[ parentBoxId ];

			nestedBoxObj.on( 'close', function() {
				parentBox.attr( 'style', nestedBox.attr( 'style' ) );
				parentBoxWrap.show();
				parentBoxObj._resize();
				parentBoxWrap.find( 'label.error' ).remove();
				parentBoxForm.validate().hideErrors();
				FLBuilder._toggleSettingsTabErrors();
			} );

			nestedBoxObj.close();
		},

		/* Tooltips
		----------------------------------------------------------*/

		/**
		 * Shows a help tooltip in the settings lightbox.
		 *
		 * @since 1.0
		 * @access private
		 * @method _showHelpTooltip
		 */
		_showHelpTooltip: function()
		{
			$(this).siblings('.fl-help-tooltip-text').fadeIn();
		},

		/**
		 * Hides a help tooltip in the settings lightbox.
		 *
		 * @since 1.0
		 * @access private
		 * @method _hideHelpTooltip
		 */
		_hideHelpTooltip: function()
		{
			$(this).siblings('.fl-help-tooltip-text').fadeOut();
		},

		/* Auto Suggest Fields
		----------------------------------------------------------*/

		/**
		 * Initializes all auto suggest fields within a settings form.
		 *
		 * @since 1.2.3
		 * @access private
		 * @method _initAutoSuggestFields
		 */
		_initAutoSuggestFields: function()
		{
			var fields = $('.fl-builder-settings:visible .fl-suggest-field'),
				field  = null,
				values = null,
				name   = null,
				data   = [];

			fields.each( function() {
				field = $( this );
				if ( '' !== field.attr( 'data-value' ) ) {
					FLBuilderSettingsForms.showFieldLoader( field );
					data.push( {
						name   : field.attr( 'name' ),
						value  : field.attr( 'data-value' ),
						action : field.attr( 'data-action' ),
						data   : field.attr( 'data-action-data' ),
					} );
				}
			} );

			if ( data.length ) {
				FLBuilder.ajax( {
					action: 'get_autosuggest_values',
					fields: data
				}, function( response ) {
					values = JSON.parse( response );
					for ( name in values ) {
						$( '.fl-suggest-field[name="' + name + '"]' ).attr( 'data-value', values[ name ] );
					}
					fields.each( FLBuilder._initAutoSuggestField );
				} );
			} else {
				fields.each( FLBuilder._initAutoSuggestField );
			}
		},

		/**
		 * Initializes a single auto suggest field.
		 *
		 * @since 1.2.3
		 * @access private
		 * @method _initAutoSuggestField
		 */
		_initAutoSuggestField: function()
		{
			var field = $(this);

			field.autoSuggest(FLBuilder._ajaxUrl({
				'fl_action'         : 'fl_builder_autosuggest',
				'fl_as_action'      : field.data('action'),
				'fl_as_action_data' : field.data('action-data'),
				'_wpnonce'			: FLBuilderConfig.ajaxNonce
			}), $.extend({}, {
				asHtmlID                    : field.attr('name'),
				selectedItemProp            : 'name',
				searchObjProps              : 'name',
				minChars                    : 3,
				keyDelay                    : 1000,
				fadeOut                     : false,
				usePlaceholder              : true,
				emptyText                   : FLBuilderStrings.noResultsFound,
				showResultListWhenNoMatch   : true,
				preFill                     : field.data('value'),
				queryParam                  : 'fl_as_query',
				afterSelectionAdd           : FLBuilder._updateAutoSuggestField,
				afterSelectionRemove        : FLBuilder._updateAutoSuggestField,
				selectionLimit				: field.data('limit')
			}, field.data( 'args' )));

			FLBuilderSettingsForms.hideFieldLoader( field );
		},

		/**
		 * Updates the value of an auto suggest field.
		 *
		 * @since 1.2.3
		 * @access private
		 * @method _initAutoSuggestField
		 * @param {Object} element The auto suggest field.
		 * @param {Object} item The current selection.
		 * @param {Array} selections An array of selected values.
		 */
		_updateAutoSuggestField: function(element, item, selections)
		{
			$(this).siblings('.as-values').val(selections.join(',')).trigger('change');
		},

		/* Code Fields
		----------------------------------------------------------*/

		/**
		 * Initializes all code fields in a settings form.
		 *
		 * @since 2.0
		 * @access private
		 * @method _initCodeFields
		 */
		_initCodeFields: function()
		{
			$( '.fl-builder-settings:visible' ).find( '.fl-code-field' ).each( FLBuilder._initCodeField );
		},

		/**
		 * Initializes a single code field in a settings form.
		 *
		 * @since 2.0
		 * @access private
		 * @method _initCodeField
		 */
		_initCodeField: function()
		{
			var field    = $( this ),
				textarea = field.find( 'textarea' ),
				editorId = textarea.attr( 'id' ),
				mode     = textarea.data( 'editor' ),
				wrap     = textarea.data( 'wrap' ),
				editDiv  = $( '<div>', {
					position:   'absolute',
					height:     parseInt( textarea.attr( 'rows' ), 10 ) * 20
				} ),
				editor = null;

			editDiv.insertBefore( textarea );
			textarea.css( 'display', 'none' );
			ace.require( 'ace/ext/language_tools' );
			editor = ace.edit( editDiv[0] );
			editor.$blockScrolling = Infinity;
			editor.getSession().setValue( textarea.val() );
			editor.getSession().setMode( 'ace/mode/' + mode );

			if ( wrap ) {
				editor.getSession().setUseWrapMode( true );
			}

			editor.setOptions( {
				enableBasicAutocompletion: true,
				enableLiveAutocompletion: true,
				enableSnippets: false,
				showLineNumbers: false,
				showFoldWidgets: false
			} );

			editor.getSession().on( 'change', function( e ) {
				textarea.val( editor.getSession().getValue() ).trigger( 'change' );
			} );

			textarea.closest( '.fl-field' ).data( 'editor', editor );
		},

		/* Multiple Fields
		----------------------------------------------------------*/

		/**
		 * Initializes all multiple fields in a settings form.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initMultipleFields
		 */
		_initMultipleFields: function()
		{
			var multiples = $('.fl-builder-settings:visible .fl-builder-field-multiples'),
				multiple  = null,
				fields    = null,
				i         = 0,
				cursorAt  = FLBuilderConfig.isRtl ? { left: 10 } : { right: 10 };

			for( ; i < multiples.length; i++) {

				multiple = multiples.eq(i);
				fields = multiple.find('.fl-builder-field-multiple');

				if(fields.length === 1) {
					fields.eq(0).find('.fl-builder-field-actions').addClass('fl-builder-field-actions-single');
				}
				else {
					fields.find('.fl-builder-field-actions').removeClass('fl-builder-field-actions-single');
				}
			}

			$('.fl-builder-field-multiples').sortable({
				items: '.fl-builder-field-multiple',
				cursor: 'move',
				cursorAt: cursorAt,
				distance: 5,
				opacity: 0.5,
				placeholder: 'fl-builder-field-dd-zone',
				stop: FLBuilder._fieldDragStop,
				tolerance: 'pointer',
				axis: "y"
			});
		},

		/**
		 * Adds a new multiple field to the list when the add
		 * button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _addFieldClicked
		 */
		_addFieldClicked: function()
		{
			var button      = $(this),
				fieldName   = button.attr('data-field'),
				fieldRow    = button.closest('tr').siblings('tr[data-field='+ fieldName +']').last(),
				clone       = fieldRow.clone(),
				form   		= clone.find( '.fl-form-field' ),
				formType	= null,
				index       = parseInt(fieldRow.find('label span.fl-builder-field-index').html(), 10) + 1;

			clone.find('th label span.fl-builder-field-index').html(index);
			clone.find('.fl-form-field-preview-text').html('');
			clone.find('input, textarea, select').val('');
			fieldRow.after(clone);
			FLBuilder._initMultipleFields();

			if ( form.length ) {
				formType = form.find( '.fl-form-field-edit' ).data( 'type' );
				form.find( 'input' ).val( JSON.stringify( FLBuilderSettingsConfig.defaults.forms[ formType ] ) );
			}
		},

		/**
		 * Copies a multiple field and adds it to the list when
		 * the copy button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _copyFieldClicked
		 */
		_copyFieldClicked: function()
		{
			var button      = $(this),
				row         = button.closest('tr'),
				clone       = row.clone(),
				index       = parseInt(row.find('label span.fl-builder-field-index').html(), 10) + 1;

			clone.find('th label span.fl-builder-field-index').html(index);
			row.after(clone);
			FLBuilder._renumberFields(row.parent());
			FLBuilder._initMultipleFields();
			FLBuilder.preview.delayPreview();
		},

		/**
		 * Deletes a multiple field from the list when the
		 * delete button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _deleteFieldClicked
		 */
		_deleteFieldClicked: function()
		{
			var row     = $(this).closest('tr'),
				parent  = row.parent(),
				result  = confirm(FLBuilderStrings.deleteFieldMessage);

			if(result) {
				row.remove();
				FLBuilder._renumberFields(parent);
				FLBuilder._initMultipleFields();
				FLBuilder.preview.delayPreview();
			}
		},

		/**
		 * Renumbers the labels for a list of multiple fields.
		 *
		 * @since 1.0
		 * @access private
		 * @method _renumberFields
		 * @param {Object} table A table element with multiple fields.
		 */
		_renumberFields: function(table)
		{
			var rows = table.find('.fl-builder-field-multiple'),
				i    = 0;

			for( ; i < rows.length; i++) {
				rows.eq(i).find('th label span.fl-builder-field-index').html(i + 1);
			}
		},

		/**
		 * Returns an element for multiple field drag operations.
		 *
		 * @since 1.0
		 * @access private
		 * @method _fieldDragHelper
		 * @return {Object} The helper element.
		 */
		_fieldDragHelper: function()
		{
			return $('<div class="fl-builder-field-dd-helper"></div>');
		},

		/**
		 * Renumbers and triggers a preview when a multiple field
		 * has finished dragging.
		 *
		 * @since 1.0
		 * @access private
		 * @method _fieldDragStop
		 * @param {Object} e The event object.
		 * @param {Object} ui An object with additional info for the drag.
		 */
		_fieldDragStop: function(e, ui)
		{
			FLBuilder._renumberFields(ui.item.parent());

			FLBuilder.preview.delayPreview();
		},

		/* Select Fields
		----------------------------------------------------------*/

		/**
		 * Initializes select fields for a settings form.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initSelectFields
		 */
		_initSelectFields: function()
		{
			$('.fl-builder-settings:visible').find('.fl-builder-settings-fields select').trigger('change');
		},

		/**
		 * Callback for when a settings form select has been changed.
		 * If toggle data is present, other fields will be toggled
		 * when this select changes.
		 *
		 * @since 1.0
		 * @access private
		 * @method _settingsSelectChanged
		 */
		_settingsSelectChanged: function()
		{
			var select  = $(this),
				toggle  = select.attr('data-toggle'),
				hide    = select.attr('data-hide'),
				trigger = select.attr('data-trigger'),
				val     = select.val(),
				i       = 0,
				k       = 0;

			// TOGGLE sections, fields or tabs.
			if(typeof toggle !== 'undefined') {

				toggle = JSON.parse(toggle);

				for(i in toggle) {
					FLBuilder._settingsSelectToggle(toggle[i].fields, 'hide', '#fl-field-');
					FLBuilder._settingsSelectToggle(toggle[i].sections, 'hide', '#fl-builder-settings-section-');
					FLBuilder._settingsSelectToggle(toggle[i].tabs, 'hide', 'a[href*=fl-builder-settings-tab-', ']');
				}

				if(typeof toggle[val] !== 'undefined') {
					FLBuilder._settingsSelectToggle(toggle[val].fields, 'show', '#fl-field-');
					FLBuilder._settingsSelectToggle(toggle[val].sections, 'show', '#fl-builder-settings-section-');
					FLBuilder._settingsSelectToggle(toggle[val].tabs, 'show', 'a[href*=fl-builder-settings-tab-', ']');
				}
			}

			// HIDE sections, fields or tabs.
			if(typeof hide !== 'undefined') {

				hide = JSON.parse(hide);

				if(typeof hide[val] !== 'undefined') {
					FLBuilder._settingsSelectToggle(hide[val].fields, 'hide', '#fl-field-');
					FLBuilder._settingsSelectToggle(hide[val].sections, 'hide', '#fl-builder-settings-section-');
					FLBuilder._settingsSelectToggle(hide[val].tabs, 'hide', 'a[href*=fl-builder-settings-tab-', ']');
				}
			}

			// TRIGGER select inputs.
			if(typeof trigger !== 'undefined') {

				trigger = JSON.parse(trigger);

				if(typeof trigger[val] !== 'undefined') {
					if(typeof trigger[val].fields !== 'undefined') {
						for(i = 0; i < trigger[val].fields.length; i++) {
							$('#fl-field-' + trigger[val].fields[i]).find('select').trigger('change');
						}
					}
				}
			}

			FLBuilder._calculateSettingsTabsOverflow();
		},

		/**
		 * @since 1.0
		 * @access private
		 * @method _settingsSelectToggle
		 * @param {Array} inputArray
		 * @param {Function} func
		 * @param {String} prefix
		 * @param {String} suffix
		 */
		_settingsSelectToggle: function(inputArray, func, prefix, suffix)
		{
			var i = 0;

			suffix = 'undefined' == typeof suffix ? '' : suffix;

			if(typeof inputArray !== 'undefined') {

				for( ; i < inputArray.length; i++) {

					$('.fl-builder-settings:visible').find(prefix + inputArray[i] + suffix)[func]();

					// Resize code editor fields.
					$( prefix + inputArray[i] + suffix ).parent().find( '.fl-field[data-type="code"]' ).each( function() {
						$( this ).data( 'editor' ).resize();
					} );
				}
			}
		},

		/* Color Pickers
		----------------------------------------------------------*/

		/**
		 * Initializes color picker fields for a settings form.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initColorPickers
		 */
		_initColorPickers: function()
		{

			var colorPresets 	   = FLBuilderConfig.colorPresets ? FLBuilderConfig.colorPresets : [];
			FLBuilder.colorPicker  = new FLBuilderColorPicker({
				mode: 'hsv',
				elements: '.fl-color-picker .fl-color-picker-value',
		    	presets: colorPresets,
				labels: {
					colorPresets 		: FLBuilderStrings.colorPresets,
					colorPicker 		: FLBuilderStrings.colorPicker,
					placeholder			: FLBuilderStrings.placeholder,
					removePresetConfirm	: FLBuilderStrings.removePresetConfirm,
					noneColorSelected	: FLBuilderStrings.noneColorSelected,
					alreadySaved		: FLBuilderStrings.alreadySaved,
					noPresets			: FLBuilderStrings.noPresets,
					presetAdded			: FLBuilderStrings.presetAdded,
				}
		    });

			$( FLBuilder.colorPicker ).on( 'presetRemoved presetAdded', function( event, data ) {
	    		FLBuilder.ajax({
					action: 'save_color_presets',
					presets: data.presets
				});

	    	});

		},

		/* Single Photo Fields
		----------------------------------------------------------*/

		/**
		 * Initializes the single photo selector.
		 *
		 * @since 1.8.6
		 * @access private
		 * @method _initSinglePhotoSelector
		 */
		_initSinglePhotoSelector: function()
		{
			if(FLBuilder._singlePhotoSelector === null) {
				FLBuilder._singlePhotoSelector = wp.media({
					title: FLBuilderStrings.selectPhoto,
					button: { text: FLBuilderStrings.selectPhoto },
					library : { type : 'image' },
					multiple: false
				});
				FLBuilder._singlePhotoSelector.on( 'open', FLBuilder._wpmedia_reset_errors );
				_wpPluploadSettings['defaults']['multipart_params']['fl_upload_type']= 'photo';
			}
		},

		/**
		 * Shows the single photo selector.
		 *
		 * @since 1.0
		 * @access private
		 * @method _selectSinglePhoto
		 */
		_selectSinglePhoto: function()
		{
			FLBuilder._initSinglePhotoSelector();
			FLBuilder._singlePhotoSelector.once('open', $.proxy(FLBuilder._singlePhotoOpened, this));
			FLBuilder._singlePhotoSelector.once('select', $.proxy(FLBuilder._singlePhotoSelected, this));
			FLBuilder._singlePhotoSelector.open();
		},

		/**
		 * Callback for when the single photo selector is shown.
		 *
		 * @since 1.0
		 * @access private
		 * @method _singlePhotoOpened
		 */
		_singlePhotoOpened: function()
		{
			var selection   = FLBuilder._singlePhotoSelector.state().get('selection'),
				wrap        = $(this).closest('.fl-photo-field'),
				photoField  = wrap.find('input[type=hidden]'),
				photo       = photoField.val(),
				attachment  = null;

			if($(this).hasClass('fl-photo-replace')) {
				selection.reset();
				wrap.addClass('fl-photo-empty');
				photoField.val('');
			}
			else if(photo !== '') {
				attachment = wp.media.attachment(photo);
				attachment.fetch();
				selection.add(attachment ? [attachment] : []);
			}
			else {
				selection.reset();
			}
		},

		/**
		 * Callback for when a single photo is selected.
		 *
		 * @since 1.0
		 * @access private
		 * @method _singlePhotoSelected
		 */
		_singlePhotoSelected: function()
		{
			var photo      = FLBuilder._singlePhotoSelector.state().get('selection').first().toJSON(),
				wrap       = $(this).closest('.fl-photo-field'),
				photoField = wrap.find('input[type=hidden]'),
				preview    = wrap.find('.fl-photo-preview img'),
				srcSelect  = wrap.find('select');

			photoField.val(photo.id);
			preview.attr('src', FLBuilder._getPhotoSrc(photo));
			wrap.removeClass('fl-photo-empty').removeClass('fl-photo-no-attachment');
			wrap.find('label.error').remove();
			srcSelect.show();
			srcSelect.html(FLBuilder._getPhotoSizeOptions(photo));
			srcSelect.trigger('change');
			FLBuilderSettingsConfig.attachments[ photo.id ] = photo;
		},

		/**
		 * Clears a photo that has been selected in a single photo field.
		 *
		 * @since 1.6.4.3
		 * @access private
		 * @method _singlePhotoRemoved
		 */
		_singlePhotoRemoved: function()
		{
			FLBuilder._initSinglePhotoSelector();

			var state       = FLBuilder._singlePhotoSelector.state(),
				selection   = 'undefined' != typeof state ? state.get('selection') : null,
				wrap        = $(this).closest('.fl-photo-field'),
				photoField  = wrap.find('input[type=hidden]'),
				srcSelect   = wrap.find('select');

			if ( selection ) {
				selection.reset();
			}

			wrap.addClass('fl-photo-empty');
			photoField.val('');
			srcSelect.html('<option value="" selected></option>');
			srcSelect.trigger('change');
		},

		/**
		 * Returns the src URL for a photo.
		 *
		 * @since 1.0
		 * @access private
		 * @method _getPhotoSrc
		 * @param {Object} photo A photo data object.
		 * @return {String} The src URL for a photo.
		 */
		_getPhotoSrc: function(photo)
		{
			if(typeof photo.sizes === 'undefined') {
				return photo.url;
			}
			else if(typeof photo.sizes.thumbnail !== 'undefined') {
				return photo.sizes.thumbnail.url;
			}
			else {
				return photo.sizes.full.url;
			}
		},

		/**
		 * Builds the options for a photo size select.
		 *
		 * @since 1.0
		 * @access private
		 * @method _getPhotoSizeOptions
		 * @param {Object} photo A photo data object.
		 * @param {String} selectedSize The selected photo size if one is set.
		 * @return {String} The HTML for the photo size options.
		 */
		_getPhotoSizeOptions: function( photo, selectedSize )
		{
			var html     = '',
				size     = null,
				selected = null,
				check    = null,
				title    = '',
				titles = {
					full      : FLBuilderStrings.fullSize,
					large     : FLBuilderStrings.large,
					medium    : FLBuilderStrings.medium,
					thumbnail : FLBuilderStrings.thumbnail
				};

			if(typeof photo.sizes === 'undefined' || 0 === photo.sizes.length) {
				html += '<option value="' + photo.url + '">' + FLBuilderStrings.fullSize + '</option>';
			}
			else {

				// Check the selected value without the protocol so we get a match if
				// a site has switched to HTTPS since selecting this photo (#641).
				if ( selectedSize ) {
					selectedSize = selectedSize.replace( /https?/, '' );
				}

				for(size in photo.sizes) {

					if ( 'undefined' != typeof titles[ size ] ) {
						title = titles[ size ] + ' - ';
					}
					else if ( 'undefined' != typeof FLBuilderConfig.customImageSizeTitles[ size ] ) {
						title = FLBuilderConfig.customImageSizeTitles[ size ] + ' - ';
					}
					else {
						title = '';
					}

					selected = '';

					if ( ! selectedSize ) {
						selected = size == 'full' ? ' selected="selected"' : '';
					} else if( selectedSize === photo.sizes[ size ].url.replace( /https?/, '' ) ) {
						selected = ' selected="selected"';
					}

					html += '<option value="' + photo.sizes[size].url + '"' + selected + '>' + title + photo.sizes[size].width + ' x ' + photo.sizes[size].height + '</option>';
				}
			}

			return html;
		},

		/* Multiple Photo Fields
		----------------------------------------------------------*/

		/**
		 * Shows the multiple photo selector.
		 *
		 * @since 1.0
		 * @access private
		 * @method _selectMultiplePhotos
		 */
		_selectMultiplePhotos: function()
		{
			var wrap           = $(this).closest('.fl-multiple-photos-field'),
				photosField    = wrap.find('input[type=hidden]'),
				photosFieldVal = photosField.val(),
				parsedVal      = photosFieldVal === '' ? '' : JSON.parse(photosFieldVal),
				defaultPostId  = wp.media.gallery.defaults.id,
				content        = '[gallery ids="-1"]',
				shortcode      = null,
				attachments    = null,
				selection      = null,
				i              = null,
				ids            = [];

			// Builder the gallery shortcode.
			if ( 'object' == typeof parsedVal ) {
				for ( i in parsedVal ) {
					ids.push( parsedVal[ i ] );
				}
				content = '[gallery ids="'+ ids.join() +'"]';
			}

			shortcode = wp.shortcode.next('gallery', content).shortcode;

			if(_.isUndefined(shortcode.get('id')) && !_.isUndefined(defaultPostId)) {
				shortcode.set('id', defaultPostId);
			}

			// Get the selection object.
			attachments = wp.media.gallery.attachments(shortcode);

			selection = new wp.media.model.Selection(attachments.models, {
				props: attachments.props.toJSON(),
				multiple: true
			});

			selection.gallery = attachments.gallery;

			// Fetch the query's attachments, and then break ties from the
			// query to allow for sorting.
			selection.more().done(function() {

				if ( ! selection.length ) {
					FLBuilder._multiplePhotoSelector.setState( 'gallery-library' );
				}

				// Break ties with the query.
				selection.props.set({ query: false });
				selection.unmirror();
				selection.props.unset('orderby');
			});

			// Destroy the previous gallery frame.
			if(FLBuilder._multiplePhotoSelector) {
				FLBuilder._multiplePhotoSelector.dispose();
			}

			// Store the current gallery frame.
			FLBuilder._multiplePhotoSelector = wp.media({
				frame:     'post',
				state:     $(this).hasClass('fl-multiple-photos-edit') ? 'gallery-edit' : 'gallery-library',
				title:     wp.media.view.l10n.editGalleryTitle,
				editing:   true,
				multiple:  true,
				selection: selection
			}).open();

			$(FLBuilder._multiplePhotoSelector.views.view.el).addClass('fl-multiple-photos-lightbox');
			FLBuilder._multiplePhotoSelector.once('update', $.proxy(FLBuilder._multiplePhotosSelected, this));
		},

		/**
		 * Callback for when multiple photos have been selected.
		 *
		 * @since 1.0
		 * @access private
		 * @method _multiplePhotosSelected
		 * @param {Object} data The photo data object.
		 */
		_multiplePhotosSelected: function(data)
		{
			var wrap        = $(this).closest('.fl-multiple-photos-field'),
				photosField = wrap.find('input[type=hidden]'),
				count       = wrap.find('.fl-multiple-photos-count'),
				photos      = [],
				i           = 0;

			for( ; i < data.models.length; i++) {
				photos.push(data.models[i].id);
			}

			if(photos.length == 1) {
				count.html('1 ' + FLBuilderStrings.photoSelected);
			}
			else {
				count.html(photos.length + ' ' + FLBuilderStrings.photosSelected);
			}

			wrap.removeClass('fl-multiple-photos-empty');
			wrap.find('label.error').remove();
			photosField.val(JSON.stringify(photos)).trigger('change');
		},

		/* Single Video Fields
		----------------------------------------------------------*/

		/**
		 * Shows the single video selector.
		 *
		 * @since 1.0
		 * @access private
		 * @method _selectSingleVideo
		 */
		_selectSingleVideo: function()
		{
			if(FLBuilder._singleVideoSelector === null) {

				FLBuilder._singleVideoSelector = wp.media({
					title: FLBuilderStrings.selectVideo,
					button: { text: FLBuilderStrings.selectVideo },
					library : { type : 'video' },
					multiple: false
				});

				FLBuilder._singleVideoSelector.on( 'open', FLBuilder._wpmedia_reset_errors );
				_wpPluploadSettings['defaults']['multipart_params']['fl_upload_type']= 'video';
			}

			FLBuilder._singleVideoSelector.once('select', $.proxy(FLBuilder._singleVideoSelected, this));
			FLBuilder._singleVideoSelector.open();
		},

		/**
		 * Callback for when a single video is selected.
		 *
		 * @since 1.0
		 * @access private
		 * @method _singleVideoSelected
		 */
		_singleVideoSelected: function()
		{
			var video      = FLBuilder._singleVideoSelector.state().get('selection').first().toJSON(),
				wrap       = $(this).closest('.fl-video-field'),
				image      = wrap.find('.fl-video-preview-img'),
				filename   = wrap.find('.fl-video-preview-filename'),
				videoField = wrap.find('input[type=hidden]');

			image.html('<span class="dashicons dashicons-media-video"></span>');
			filename.html(video.filename);
			wrap.removeClass('fl-video-empty');
			wrap.find('label.error').remove();
			videoField.val(video.id).trigger('change');
			FLBuilderSettingsConfig.attachments[ video.id ] = video;
		},

		/* Multiple Audios Field
		----------------------------------------------------------*/

		/**
		 * Shows the multiple audio selector.
		 *
		 * @since 1.0
		 * @access private
		 * @method _selectMultipleAudios
		 */
		_selectMultipleAudios: function()
		{
			var wrap           = $(this).closest('.fl-multiple-audios-field'),
				audiosField    = wrap.find('input[type=hidden]'),
				audiosFieldVal = audiosField.val(),
				content        = audiosFieldVal == '' ? '[playlist ids="-1"]' : '[playlist ids="'+ JSON.parse(audiosFieldVal).join() +'"]',
				shortcode      = wp.shortcode.next('playlist', content).shortcode,
				defaultPostId  = wp.media.playlist.defaults.id,
				attachments    = null,
				selection      = null;

			if(_.isUndefined(shortcode.get('id')) && !_.isUndefined(defaultPostId)) {
				shortcode.set('id', defaultPostId);
			}

			attachments = wp.media.playlist.attachments(shortcode);

			selection = new wp.media.model.Selection(attachments.models, {
				props: attachments.props.toJSON(),
				multiple: true
			});

			selection.playlist = attachments.playlist;

			// Fetch the query's attachments, and then break ties from the
			// query to allow for sorting.
			selection.more().done(function() {
				// Break ties with the query.
				selection.props.set({ query: false });
				selection.unmirror();
				selection.props.unset('orderby');
			});

			// Destroy the previous frame.
			if(FLBuilder._multipleAudiosSelector) {
				FLBuilder._multipleAudiosSelector.dispose();
			}

			// Store the current frame.
			FLBuilder._multipleAudiosSelector = wp.media({
				frame:     'post',
				state:     $(this).hasClass('fl-multiple-audios-edit') ? 'playlist-edit' : 'playlist-library',
				title:     wp.media.view.l10n.editPlaylistTitle,
				editing:   true,
				multiple:  true,
				selection: selection
			}).open();

			// Hide the default playlist settings since we have them added in the audio settings
			FLBuilder._multipleAudiosSelector.content.get('view').sidebar.unset('playlist');
			FLBuilder._multipleAudiosSelector.on( 'content:render:browse', function( browser ) {
			    if ( !browser ) return;
			    // Hide Playlist Settings in sidebar
			    browser.sidebar.on('ready', function(){
			        browser.sidebar.unset('playlist');
			    });
			});


			FLBuilder._multipleAudiosSelector.once('update', $.proxy(FLBuilder._multipleAudiosSelected, this));

		},

		/**
		 * Callback for when a single/multiple audo is selected.
		 *
		 * @since 1.0
		 * @access private
		 * @method _multipleAudiosSelected
		 */
		_multipleAudiosSelected: function(data)
		{
			var wrap       		= $(this).closest('.fl-multiple-audios-field'),
				count      		= wrap.find('.fl-multiple-audios-count'),
				audioField 		= wrap.find('input[type=hidden]'),
				audios     		= [],
				i          		= 0;

			for( ; i < data.models.length; i++) {
				audios.push(data.models[i].id);
			}

			if(audios.length == 1) {
				count.html('1 ' + FLBuilderStrings.audioSelected);
			}
			else {
				count.html(audios.length + ' ' + FLBuilderStrings.audiosSelected);
			}

			audioField.val(JSON.stringify(audios)).trigger('change');
			wrap.removeClass('fl-multiple-audios-empty');
			wrap.find('label.error').remove();

		},

		/* Icon Fields
		----------------------------------------------------------*/

		/**
		 * Shows the icon selector.
		 *
		 * @since 1.0
		 * @access private
		 * @method _selectIcon
		 */
		_selectIcon: function()
		{
			var self = this;

			FLIconSelector.open(function(icon){
				FLBuilder._iconSelected.apply(self, [icon]);
			});
		},

		/**
		 * Callback for when an icon is selected.
		 *
		 * @since 1.0
		 * @access private
		 * @method _iconSelected
		 * @param {String} icon The selected icon's CSS classname.
		 */
		_iconSelected: function(icon)
		{
			var wrap       = $(this).closest('.fl-icon-field'),
				iconField  = wrap.find('input[type=hidden]'),
				iconTag    = wrap.find('i'),
				oldIcon    = iconTag.attr('data-icon');

			iconField.val(icon).trigger('change');
			iconTag.removeClass(oldIcon);
			iconTag.addClass(icon);
			iconTag.attr('data-icon', icon);
			wrap.removeClass('fl-icon-empty');
			wrap.find('label.error').remove();
		},

		/**
		 * Callback for when a selected icon is removed.
		 *
		 * @since 1.0
		 * @access private
		 * @method _removeIcon
		 */
		_removeIcon: function()
		{
			var wrap       = $(this).closest('.fl-icon-field'),
				iconField  = wrap.find('input[type=hidden]'),
				iconTag    = wrap.find('i');

			iconField.val('').trigger('change');
			iconTag.removeClass();
			iconTag.attr('data-icon', '');
			wrap.addClass('fl-icon-empty');
		},

		/* Settings Form Fields
		----------------------------------------------------------*/

		/**
		 * Shows the settings for a nested form field when the
		 * edit link is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _formFieldClicked
		 */
		_formFieldClicked: function()
		{
			var link      = $( this ),
				form      = link.closest( '.fl-builder-settings' ),
				type      = link.attr( 'data-type' ),
				settings  = link.siblings( 'input' ).val(),
				helper    = FLBuilder._moduleHelpers[ type ],
				config    = FLBuilderSettingsConfig.forms[ type ],
				lightbox  = FLBuilder._openNestedSettings( { className: 'fl-builder-lightbox fl-form-field-settings' } );

			if ( '' === settings ) {
				settings = JSON.stringify( FLBuilderSettingsConfig.forms[ type ] );
			}

			FLBuilderSettingsForms.render( {
				id        		: type,
				nodeId    		: form.attr( 'data-node' ),
				nodeSettings	: FLBuilder._getSettings( form ),
				settings  		: JSON.parse( settings.replace( /&#39;/g, "'" ) ),
				lightbox		: lightbox,
				helper			: helper,
				rules 			: helper ? helper.rules : null
			}, function() {
				link.attr( 'id', 'fl-' + lightbox._node.attr( 'data-instance-id' ) );
				lightbox._node.find( 'form.fl-builder-settings' ).attr( 'data-type', type );
			} );
		},

		/**
		 * Saves the settings for a nested form field when the
		 * save button is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _saveFormFieldClicked
		 * @return {Boolean} Whether the save was successful or not.
		 */
		_saveFormFieldClicked: function()
		{
			var form          = $(this).closest('.fl-builder-settings'),
				lightboxId    = $(this).closest('.fl-lightbox-wrap').attr('data-instance-id'),
				type          = form.attr('data-type'),
				settings      = FLBuilder._getSettings(form),
				oldSettings   = {},
				helper        = FLBuilder._moduleHelpers[type],
				link          = $('.fl-builder-settings #fl-' + lightboxId),
				preview       = link.parent().attr('data-preview-text'),
				previewField  = form.find( '#fl-field-' + preview ),
				previewText   = settings[preview],
				selectPreview = $( 'select[name="' + preview + '"]' ),
				tmp           = document.createElement('div'),
				valid         = true;

			if ( selectPreview.length > 0 ) {
				previewText = selectPreview.find( 'option[value="' + settings[ preview ] + '"]' ).text();
			}
			if(typeof helper !== 'undefined') {

				form.find('label.error').remove();
				form.validate().hideErrors();
				valid = form.validate().form();

				if(valid) {
					valid = helper.submit();
				}
			}
			if(valid) {

				if(typeof preview !== 'undefined' && typeof previewText !== 'undefined') {

					if('icon' === previewField.data('type')) {
						previewText = '<i class="' + previewText + '"></i>';
					}
					else if(previewText.length > 35) {
						tmp.innerHTML = previewText;
						previewText = (tmp.textContent || tmp.innerText || '').replace(/^(.{35}[^\s]*).*/, "$1")  + '...';
					}

					link.siblings('.fl-form-field-preview-text').html(previewText);
				}

				oldSettings = link.siblings('input').val().replace(/&#39;/g, "'");

				if ( '' != oldSettings ) {
					settings = $.extend( JSON.parse( oldSettings ), settings );
				}

				link.siblings('input').val(JSON.stringify(settings)).trigger('change');

				FLBuilder._closeNestedSettings();

				return true;
			}
			else {
				FLBuilder._toggleSettingsTabErrors();
				return false;
			}
		},

		/* Layout Fields
		----------------------------------------------------------*/

		/**
		 * Callback for when the item of a layout field is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _layoutFieldClicked
		 */
		_layoutFieldClicked: function()
		{
			var option = $(this);

			option.siblings().removeClass('fl-layout-field-option-selected');
			option.addClass('fl-layout-field-option-selected');
			option.siblings('input').val(option.attr('data-value'));
		},

		/* Link Fields
		----------------------------------------------------------*/

		/**
		 * Initializes all link fields in a settings form.
		 *
		 * @since 1.3.9
		 * @access private
		 * @method _initLinkFields
		 */
		_initLinkFields: function()
		{
			$('.fl-builder-settings:visible .fl-link-field').each(FLBuilder._initLinkField);
		},

		/**
		 * Initializes a single link field in a settings form.
		 *
		 * @since 1.3.9
		 * @access private
		 * @method _initLinkFields
		 */
		_initLinkField: function()
		{
			var wrap        = $(this),
				searchInput = wrap.find('.fl-link-field-search-input');

			searchInput.autoSuggest(FLBuilder._ajaxUrl({
				'fl_action'         : 'fl_builder_autosuggest',
				'fl_as_action'      : 'fl_as_links',
				'_wpnonce'			: FLBuilderConfig.ajaxNonce
			}), {
				asHtmlID                    : searchInput.attr('name'),
				selectedItemProp            : 'name',
				searchObjProps              : 'name',
				minChars                    : 3,
				keyDelay                    : 1000,
				fadeOut                     : false,
				usePlaceholder              : true,
				emptyText                   : FLBuilderStrings.noResultsFound,
				showResultListWhenNoMatch   : true,
				queryParam                  : 'fl_as_query',
				selectionLimit              : 1,
				afterSelectionAdd           : FLBuilder._updateLinkField
			});
		},

		/**
		 * Updates the value of a link field when a link has been
		 * selected from the auto suggest menu.
		 *
		 * @since 1.3.9
		 * @access private
		 * @method _updateLinkField
		 * @param {Object} element The auto suggest field.
		 * @param {Object} item The current selection.
		 * @param {Array} selections An array of selected values.
		 */
		_updateLinkField: function(element, item, selections)
		{
			var wrap        = element.closest('.fl-link-field'),
				search      = wrap.find('.fl-link-field-search'),
				searchInput = wrap.find('.fl-link-field-search-input'),
				field       = wrap.find('.fl-link-field-input');

			field.val(item.value).trigger('keyup');
			searchInput.autoSuggest('remove', item.value);
			search.hide();
		},

		/**
		 * Shows the auto suggest input for a link field.
		 *
		 * @since 1.3.9
		 * @access private
		 * @method _linkFieldSelectClicked
		 */
		_linkFieldSelectClicked: function()
		{
			var $el = $(this).closest('.fl-link-field').find('.fl-link-field-search');
			$el.show();
			$el.find('input').focus();
		},

		/**
		 * Hides the auto suggest input for a link field.
		 *
		 * @since 1.3.9
		 * @access private
		 * @method _linkFieldSelectCancelClicked
		 */
		_linkFieldSelectCancelClicked: function()
		{
			var $button = $(this);
			$button.parent().hide();
			$button.closest('.fl-link-field').find('input.fl-link-field-input').focus();
		},

		/* Font Fields
		----------------------------------------------------------*/

		/**
		 * Initializes all font fields in a settings form.
		 *
		 * @since  1.6.3
		 * @access private
		 * @method _initFontFields
		 */
		_initFontFields: function(){
			$('.fl-builder-settings:visible .fl-font-field').each( FLBuilder._initFontField );
		},

		/**
		 * Initializes a single font field in a settings form.
		 *
		 * @since  1.6.3
		 * @access private
		 * @method _initFontFields
		 */
		_initFontField: function(){
			var wrap   = $( this ),
				value  = wrap.attr( 'data-value' ),
				font   = wrap.find( '.fl-font-field-font' ),
				weight = wrap.find( '.fl-font-field-weight' );

			font.on( 'change', function(){
				FLBuilder._getFontWeights( font );
			} );

			if ( value.indexOf( 'family' ) > -1 ) {

				value = JSON.parse( value );
				font.val( value.family );
				font.trigger( 'change' );

				if ( weight.find( 'option[value=' + value.weight + ']' ).length ) {
					weight.val( value.weight );
				}
			}
		},

		/**
		 * Renders the correct weights list for a respective font.
		 *
		 * @since  1.6.3
		 * @acces  private
		 * @method _getFontWeights
		 * @param  {Object} currentFont The font field element.
		 */
		_getFontWeights: function( currentFont ){
			var selectWeight = currentFont.next( '.fl-font-field-weight' ),
				font         = currentFont.val(),
				weightMap    = {
					'default' : 'Default',
					'regular' : 'Regular',
					'100': 'Thin 100',
					'200': 'Extra-Light 200',
					'300': 'Light 300',
					'400': 'Normal 400',
					'500': 'Medium 500',
					'600': 'Semi-Bold 600',
					'700': 'Bold 700',
					'800': 'Extra-Bold 800',
					'900': 'Ultra-Bold 900'
				},
				weights      = {};

				selectWeight.html('');

				if ( 'undefined' != typeof FLBuilderFontFamilies.system[ font ] ) {
					weights = FLBuilderFontFamilies.system[ font ].weights;
				}
				else if ( 'undefined' != typeof FLBuilderFontFamilies.google[ font ] ) {
					weights = FLBuilderFontFamilies.google[ font ];
				} else {
					weights = FLBuilderFontFamilies.default[ font ];
				}

			$.each( weights, function( key, value ){
				selectWeight.append( '<option value="' + value + '">' + weightMap[ value ] + '</option>' );
			} );

		},

		/* Editor Fields
		----------------------------------------------------------*/

		/**
		 * InitializeS TinyMCE when the builder is first loaded.
		 *
		 * @since  2.0
		 * @access private
		 * @method _initEditorFields
		 */
		_initTinyMCE: function()
		{
			tinymce.ui.FloatPanel.zIndex = 100100; // Fix zIndex issue in wp 4.8.1

			$( '.fl-builder-hidden-editor' ).each( FLBuilder._initEditorField );
		},

		/**
		 * Initialize all TinyMCE editor fields.
		 *
		 * @since  1.10
		 * @access private
		 * @method _initEditorFields
		 */
		_initEditorFields: function()
		{
			$( '.fl-builder-settings:visible .fl-editor-field' ).each( FLBuilder._initEditorField );
		},

		/**
		 * Initialize a single TinyMCE editor field.
		 *
		 * @since 2.0
		 * @method _initEditorField
		 */
		_initEditorField: function()
		{
			var field	 = $( this ),
				textarea = field.find( 'textarea' ),
				name 	 = field.attr( 'data-name' ),
				editorId = 'flrich' + new Date().getTime() + '_' + name,
				html 	 = FLBuilderConfig.wp_editor,
				config	 = tinyMCEPreInit,
				buttons  = Number( field.attr( 'data-buttons' ) ),
				rows  	 = field.attr( 'data-rows' ),
				init     = null,
				wrap     = null;

			html = html.replace( /flbuildereditor/g , editorId ).replace( '{FL_EDITOR_CONTENT}' , textarea.val() );
			config = JSON.parse( JSON.stringify( config ).replace( /flbuildereditor/g , editorId ) );

			textarea.after( html ).remove();

			if ( undefined !== typeof tinymce && undefined !== config.mceInit[ editorId ] ) {

				init = config.mceInit[ editorId ];
				wrap = tinymce.$( '#wp-' + editorId + '-wrap' );
				wrap.find( 'textarea' ).attr( 'rows', rows );

				if ( ! buttons ) {
					wrap.find( '.wp-media-buttons' ).remove();
				}

				if ( ( wrap.hasClass( 'tmce-active' ) || ! config.qtInit.hasOwnProperty( editorId ) ) && ! init.wp_skip_init ) {
					tinymce.init( init );
				}
			}

			if ( undefined !== typeof quicktags ) {
				quicktags( config.qtInit[ editorId ] );
			}

			window.wpActiveEditor = editorId;
		},

		/**
		 * Reinitialize all TinyMCE editor fields.
		 *
		 * @since  2.0
		 * @access private
		 * @method _reinitEditorFields
		 */
		_reinitEditorFields: function()
		{
			if ( ! $( '.fl-lightbox-resizable:visible' ).length ) {
				return;
			}

			// Do this on a timeout so TinyMCE doesn't hold up other operations.
			setTimeout( function() {

				var i, id;

				if ( 'undefined' === typeof tinymce ) {
					return;
				}

				for ( i = tinymce.editors.length - 1; i > -1 ; i-- ) {
					id = tinymce.editors[ i ].id;
					tinyMCE.execCommand( 'mceRemoveEditor', true, id );
					tinyMCE.execCommand( 'mceAddEditor', true, id );
				}

				if ( FLBuilder.preview ) {
					FLBuilder.preview._initDefaultFieldPreviews( $( '.fl-field[data-type="editor"]' ) );
				}

			}, 1 );
		},

		/**
		 * Destroy all TinyMCE editors.
		 *
		 * @since 1.10.8
		 * @method _destroyEditorFields
		 */
		_destroyEditorFields: function()
		{
			var i, id;

			if ( 'undefined' === typeof tinymce ) {
				return;
			}

			for ( i = tinymce.editors.length - 1; i > -1 ; i-- ) {
				tinyMCE.execCommand( 'mceRemoveEditor', true, tinymce.editors[ i ].id );
			}

			$( '.wplink-autocomplete' ).remove();
			$( '.ui-helper-hidden-accessible' ).remove();
		},

		/**
		 * Updates all editor fields within a settings form.
		 *
		 * @since 1.0
		 * @access private
		 * @method _updateEditorFields
		 */
		_updateEditorFields: function()
		{
			var wpEditors = $('.fl-builder-settings:visible textarea.wp-editor-area');

			wpEditors.each(FLBuilder._updateEditorField);
		},

		/**
		 * Updates a single editor field within a settings form.
		 * Creates a hidden textarea with the editor content so
		 * this field can be saved.
		 *
		 * @since 1.0
		 * @access private
		 * @method _updateEditorField
		 */
		_updateEditorField: function()
		{
			var textarea  = $( this ),
				field     = textarea.closest( '.fl-editor-field' ),
				form      = textarea.closest( '.fl-builder-settings' ),
				wrap      = textarea.closest( '.wp-editor-wrap' ),
				id        = textarea.attr( 'id' ),
				setting   = field.attr( 'data-name' ),
				editor    = typeof tinyMCE == 'undefined' ? false : tinyMCE.get( id ),
				hidden    = textarea.siblings( 'textarea[name="' + setting + '"]' ),
				wpautop   = field.attr( 'data-wpautop' );

			// Add a hidden textarea if we don't have one.
			if ( 0 === hidden.length ) {
				hidden = $( '<textarea name="' + setting + '"></textarea>' ).hide();
				textarea.after( hidden );
			}

			// Save editor content.
			if ( wpautop ) {

				if ( editor && wrap.hasClass( 'tmce-active' ) ) {
					hidden.val( editor.getContent() );
				}
				else if ( 'undefined' != typeof switchEditors ) {
					hidden.val( switchEditors.wpautop( textarea.val() ) );
				}
				else {
					hidden.val( textarea.val() );
				}
			}
			else {

				if ( editor && wrap.hasClass( 'tmce-active' ) ) {
					editor.save();
				}

				hidden.val( textarea.val() );
			}
		},

		/* Loop Settings Fields
		----------------------------------------------------------*/

		/**
		 * Callback for the data source of loop settings changes.
		 *
		 * @since 1.10
		 * @access private
		 * @method _loopDataSourceChange
		 */
		_loopDataSourceChange: function()
		{
			var val = $( this ).val();

			$('.fl-loop-data-source').hide();
			$('.fl-loop-data-source[data-source="' + val + '"]').show();
		},

		/**
		 * Callback for when the post type of a custom query changes.
		 *
		 * @since 1.2.3
		 * @access private
		 * @method _customQueryPostTypeChange
		 */
		_customQueryPostTypeChange: function()
		{
			var val = $(this).val();

			$('.fl-custom-query-filter').hide();
			$('.fl-custom-query-' + val + '-filter').show();
		},

		/* Ordering Fields
		----------------------------------------------------------*/

		/**
		 * Initializes all ordering fields in a settings form.
		 *
		 * @since  1.10
		 * @access private
		 * @method _initOrderingFields
		 */
		_initOrderingFields: function()
		{
			$( '.fl-builder-settings:visible .fl-ordering-field-options' ).each( FLBuilder._initOrderingField );
		},

		/**
		 * Initializes a single ordering field in a settings form.
		 *
		 * @since  1.10
		 * @access private
		 * @method _initOrderingField
		 */
		_initOrderingField: function()
		{
			$( this ).sortable( {
				items: '.fl-ordering-field-option',
				containment: 'parent',
				tolerance: 'pointer',
				stop: FLBuilder._updateOrderingField
			} );
		},

		/**
		 * Updates an ordering field when dragging stops.
		 *
		 * @since  1.10
		 * @access private
		 * @method _updateOrderingField
		 * @param {Object} e The event object.
		 */
		_updateOrderingField: function( e )
		{
			var options = $( e.target ),
				input   = options.siblings( 'input[type=hidden]' ),
				value   = [];

			options.find( '.fl-ordering-field-option' ).each( function() {
				value.push( $( this ).attr( 'data-key' ) );
			} );

			input.val( JSON.stringify( value ) ).trigger( 'change' );
		},

		/* Number Fields
		----------------------------------------------------------*/

		/**
		 * @since  2.0
		 * @access private
		 * @method _onNumberFieldFocus
		 */
		_onNumberFieldFocus: function(e) {
			var $input = $(e.currentTarget);
			$input.addClass('mousetrap');

			Mousetrap.bind('up', function() {
				$input.attr('step', 1);
			});
			Mousetrap.bind('down', function() {
				$input.attr('step', 1);
			});
			Mousetrap.bind('shift+up', function() {
				$input.attr('step', 10);
			});
			Mousetrap.bind('shift+down', function() {
				$input.attr('step', 10);
			});
		},

		/**
		 * @since  2.0
		 * @access private
		 * @method _onNumberFieldBlur
		 */
		_onNumberFieldBlur: function(e) {
			var $input = $(e.currentTarget);
			$input.attr('step', 1).removeClass('mousetrap');
		},

		/* Timezone Fields
		----------------------------------------------------------*/

		/**
		 * @since  2.0
		 * @access private
		 * @method _initTimezoneFields
		 */
		_initTimezoneFields: function() {
			$( '.fl-builder-settings:visible .fl-field[data-type=timezone]' ).each( FLBuilder._initTimezoneField );
		},

		/**
		 * @since  2.0
		 * @access private
		 * @method _initTimezoneField
		 */
		_initTimezoneField: function() {
			var select = $( this ).find( 'select' ),
				value  = select.attr( 'data-value' );

			select.find( 'option[value="' + value + '"]' ).attr( 'selected', 'selected' );
		},

		/* AJAX
		----------------------------------------------------------*/

		/**
		 * Frontend AJAX for the builder interface.
		 *
		 * @since 1.0
		 * @method ajax
		 * @param {Object} data The data for the AJAX request.
		 * @param {Function} callback A function to call when the request completes.
		 */
		ajax: function(data, callback)
		{
			var prop;

			FLBuilder.triggerHook('didBeginAJAX', data );

			// Undefined props don't get sent to the server, so make them null.
			for ( prop in data ) {
				if ( 'undefined' == typeof data[ prop ] ) {
					data[ prop ] = null;
				}
			}

			// Add the ajax nonce to the data.
			data._wpnonce = FLBuilderConfig.ajaxNonce;

			// Send the post id to the server.
			data.post_id = FLBuilderConfig.postId;

			// Tell the server that the builder is active.
			data.fl_builder = 1;

			// Append the builder namespace to the action.
			data.fl_action = data.action;

			// Prevent ModSecurity false positives if our fix is enabled.
			if ( 'undefined' != typeof data.settings ) {
				data.settings = FLBuilder._ajaxModSecFix( data.settings );
			}
			if ( 'undefined' != typeof data.node_settings ) {
				data.node_settings = FLBuilder._ajaxModSecFix( data.node_settings );
			}

			// Store the data in a single variable to avoid conflicts.
			data = { fl_builder_data: data };

			// Do the ajax call.
			return $.post(FLBuilder._ajaxUrl(), data, function(response) {

				FLBuilder._ajaxComplete();

				if(typeof callback !== 'undefined') {
					callback.call(this, response);
				}

				FLBuilder.triggerHook('didCompleteAJAX', data );
			});
		},

		/**
		 * Callback for when an AJAX request is complete.
		 *
		 * @since 1.0
		 * @access private
		 * @method _ajaxComplete
		 */
		_ajaxComplete: function()
		{
			FLBuilder.hideAjaxLoader();
		},

		/**
		 * Returns a URL for an AJAX request.
		 *
		 * @since 1.0
		 * @access private
		 * @method _ajaxUrl
		 * @param {Object} params An object with key/value pairs for the AJAX query string.
		 * @return {String} The AJAX URL.
		 */
		_ajaxUrl: function(params)
		{
			var url     = window.location.href.split( '#' ).shift(),
				param   = null;

			if(typeof params !== 'undefined') {

				for(param in params) {
					url += url.indexOf('?') > -1 ? '&' : '?';
					url += param + '=' + params[param];
				}
			}

			return url;
		},

		/**
		 * Shows the AJAX loading overlay.
		 *
		 * @since 1.0
		 * @method showAjaxLoader
		 */
		showAjaxLoader: function()
		{
			if( 0 === $( '.fl-builder-lightbox-loading' ).length ) {
				$( '.fl-builder-loading' ).show();
			}
		},

		/**
		 * Hides the AJAX loading overlay.
		 *
		 * @since 1.0
		 * @method hideAjaxLoader
		 */
		hideAjaxLoader: function()
		{
			$( '.fl-builder-loading' ).hide();
		},

		/**
		 * Fades a node when it is being loaded.
		 *
		 * @since 1.10
		 * @access private
		 * @param {String} nodeId
		 * @method _showNodeLoading
		 */
		_showNodeLoading: function( nodeId )
		{
			var node = $( '.fl-node-' + nodeId );

			node.addClass( 'fl-builder-node-loading' );
		},

		/**
		 * Brings a node back to 100% opacity when it's done loading.
		 *
		 * @since 2.0
		 * @access private
		 * @param {String} nodeId
		 * @method _hideNodeLoading
		 */
		_hideNodeLoading: function( nodeId )
		{
			var node = $( '.fl-node-' + nodeId );

			node.removeClass( 'fl-builder-node-loading' );
		},

		/**
		 * Inserts a placeholder in place of where a node will be
		 * that is currently loading.
		 *
		 * @since 1.10
		 * @access private
		 * @param {Object} parent
		 * @param {Number} position
		 * @method _showNodeLoadingPlaceholder
		 */
		_showNodeLoadingPlaceholder: function( parent, position )
		{
			var placeholder = $( '<div class="fl-builder-node-loading-placeholder"></div>' );

			// Get sibling rows.
			if ( parent.hasClass( 'fl-builder-content' ) ) {
				siblings = parent.find( '.fl-row' );
			}
			// Get sibling column groups.
			else if ( parent.hasClass( 'fl-row-content' ) ) {
				siblings = parent.find( ' > .fl-col-group' );
			}
			// Get sibling columns.
			else if ( parent.hasClass( 'fl-col-group' ) ) {
				parent.addClass( 'fl-col-group-has-child-loading' );
				siblings = parent.find( ' > .fl-col' );
			}
			// Get sibling modules.
			else {
				siblings = parent.find( ' > .fl-col-group, > .fl-module' );
			}

			// Add the placeholder.
			if ( 0 === siblings.length || siblings.length == position) {
				parent.append( placeholder );
			}
			else {
				siblings.eq( position ).before( placeholder );
			}
		},

		/**
		 * Removes the node loading placeholder for a node.
		 *
		 * @since 1.10
		 * @access private
		 * @param {Object} node
		 * @method _removeNodeLoadingPlaceholder
		 */
		_removeNodeLoadingPlaceholder: function( node )
		{
			var prev = node.prev( '.fl-builder-node-loading-placeholder' ),
				next = node.next( '.fl-builder-node-loading-placeholder' );

			if ( prev.length ) {
				prev.remove();
			} else {
				next.remove();
			}
		},

		/**
		 * Base64 encode settings to prevent ModSecurity false
		 * positives if our fix is enabled.
		 *
		 * @since 1.8.4
		 * @access private
		 * @method _ajaxModSecFix
		 */
		_ajaxModSecFix: function( settings )
		{
			var prop;

			if ( FLBuilderConfig.modSecFix && 'undefined' != typeof btoa ) {

				if ( 'string' == typeof settings ) {
					settings = FLBuilder._btoa( settings );
				}
				else {

					for ( prop in settings ) {

						if ( 'string' == typeof settings[ prop ] ) {
							settings[ prop ] = FLBuilder._btoa( settings[ prop ] );
						}
						else if( 'object' == typeof settings[ prop ] ) {
							settings[ prop ] = FLBuilder._ajaxModSecFix( settings[ prop ] );
						}
					}
				}
			}

			return settings;
		},

		/**
		 * Helper function for _ajaxModSecFix
		 * btoa() does not handle utf8/16 characters
		 * See: https://stackoverflow.com/questions/30106476/using-javascripts-atob-to-decode-base64-doesnt-properly-decode-utf-8-strings
		 *
		 * @since 1.10.7
		 * @access private
		 * @method _btoa
		 */
		_btoa: function(str) {
			return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function(match, p1) {
				return String.fromCharCode('0x' + p1);
			}));
		},

		/**
		 * @since 1.10.8
		 * @access private
		 * @method _wpmedia_reset_errors
		 */
		_wpmedia_reset_errors: function() {
			$('.upload-error').remove()
			$('.media-uploader-status' ).removeClass( 'errors' ).hide()
		},

		/* Lightboxes
		----------------------------------------------------------*/

		/**
		 * Initializes the lightboxes for the builder interface.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initLightboxes
		 */
		_initLightboxes: function()
		{
			/* Main builder lightbox */
			FLBuilder._lightbox = new FLLightbox({
				className: 'fl-builder-lightbox fl-builder-settings-lightbox',
				resizable: true
			});

			FLBuilder._lightbox.on('resized', FLBuilder._calculateSettingsTabsOverflow);
			FLBuilder._lightbox.on('close', FLBuilder._lightboxClosed);
			FLBuilder._lightbox.on('beforeClose', FLBuilder._destroyEditorFields);

			/* Actions lightbox */
			FLBuilder._actionsLightbox = new FLLightbox({
				className: 'fl-builder-actions-lightbox'
			});
		},

		/**
		 * Shows the settings lightbox.
		 *
		 * @since 1.0
		 * @access private
		 * @method _showLightbox
		 */
		_showLightbox: function()
		{
			FLBuilder._lightbox.open('<div class="fl-builder-lightbox-loading"></div>');
			FLBuilder._removeAllOverlays();
			FLBuilder._initLightboxScrollbars();
		},

		/**
		 * Set the content for the settings lightbox.
		 *
		 * @since 1.0
		 * @access private
		 * @method _setLightboxContent
		 * @param {String} content The HTML content for the lightbox.
		 */
		_setLightboxContent: function(content)
		{
			FLBuilder._lightbox.setContent(content);
		},

		/**
		 * Initializes the scrollbars for the settings lightbox.
		 *
		 * @since 1.0
		 * @access private
		 * @method _initLightboxScrollbars
		 */
		_initLightboxScrollbars: function()
		{
			FLBuilder._initScrollbars();
			FLBuilder._lightboxScrollbarTimeout = setTimeout(FLBuilder._initLightboxScrollbars, 500);
		},

		/**
		 * Callback to clean things up when the settings lightbox
		 * is closed.
		 *
		 * @since 1.0
		 * @access private
		 * @method _lightboxClosed
		 */
		_lightboxClosed: function()
		{
			FLBuilder.triggerHook( 'settings-lightbox-closed' );
			FLBuilder._lightbox.empty();
			clearTimeout( FLBuilder._lightboxScrollbarTimeout );
		},

		/**
		 * Shows the actions lightbox.
		 *
		 * @since 1.0
		 * @access private
		 * @method _showActionsLightbox
		 * @param {Object} settings An object with settings for the lightbox buttons.
		 */
		_showActionsLightbox: function(settings)
		{
			var template = wp.template( 'fl-actions-lightbox' );

			// Allow extensions to modify the settings object.
			FLBuilder.triggerHook( 'actions-lightbox-settings', settings );

			// Open the lightbox.
			FLBuilder._actionsLightbox.open( template( settings ) );
		},

		/* Alert Lightboxes
		----------------------------------------------------------*/

		/**
		 * Shows the alert lightbox with a message.
		 *
		 * @since 1.0
		 * @method alert
		 * @param {String} message The message to show.
		 */
		alert: function(message)
		{
			var alert = new FLLightbox({
					className: 'fl-builder-alert-lightbox',
					destroyOnClose: true
				}),
				template = wp.template( 'fl-alert-lightbox' );

			alert.open( template( { message : message } ) );
		},

		/**
		 * Closes the alert lightbox when a child element is clicked.
		 *
		 * @since 1.0
		 * @access private
		 * @method _alertClose
		 */
		_alertClose: function()
		{
			FLLightbox.closeParent(this);
		},

		/**
		 * Shows the confirm lightbox with a message.
		 *
		 * @since 1.10
		 * @method confirm
		 * @param {Object} o The config object that overrides the defaults.
		 */
		confirm: function( o )
		{
			var defaults = {
					message : '',
					ok      : function(){},
					cancel  : function(){},
					strings : {
						'ok'     : FLBuilderStrings.ok,
						'cancel' : FLBuilderStrings.cancel
					}
				},
				config = $.extend( {}, defaults, ( 'undefined' == typeof o ? {} : o ) )
				lightbox = new FLLightbox({
					className: 'fl-builder-confirm-lightbox fl-builder-alert-lightbox',
					destroyOnClose: true
				}),
				template = wp.template( 'fl-confirm-lightbox' );

			lightbox.open( template( config ) );
			lightbox._node.find( '.fl-builder-confirm-ok' ).on( 'click', config.ok );
			lightbox._node.find( '.fl-builder-confirm-cancel' ).on( 'click', config.cancel );
		},

		/* Simple JS hooks similar to WordPress PHP hooks.
		----------------------------------------------------------*/

		/**
		 * Trigger a hook.
		 *
		 * @since 1.8
		 * @method triggerHook
		 * @param {String} hook The hook to trigger.
		 * @param {Array} args An array of args to pass to the hook.
		 */
		triggerHook: function( hook, args )
		{
			$( 'body' ).trigger( 'fl-builder.' + hook, args );
		},

		/**
		 * Add a hook.
		 *
		 * @since 1.8
		 * @method addHook
		 * @param {String} hook The hook to add.
		 * @param {Function} callback A function to call when the hook is triggered.
		 */
		addHook: function( hook, callback )
		{
			$( 'body' ).on( 'fl-builder.' + hook, callback );
		},

		/**
		 * Remove a hook.
		 *
		 * @since 1.8
		 * @method removeHook
		 * @param {String} hook The hook to remove.
		 * @param {Function} callback The callback function to remove.
		 */
		removeHook: function( hook, callback )
		{
			$( 'body' ).off( 'fl-builder.' + hook, callback );
		},

		/* Console Logging
		----------------------------------------------------------*/

		/**
		 * Logs a message in the console if the console is available.
		 *
		 * @since 1.4.6
		 * @method log
		 * @param {String} message The message to log.
		 */
		log: function( message )
		{
			if ( 'undefined' == typeof window.console || 'undefined' == typeof window.console.log ) {
				return;
			}

			console.log( message );
		},

		/**
		 * Logs an error in the console if the console is available.
		 *
		 * @since 1.4.6
		 * @method logError
		 * @param {String} error The error to log.
		 */
		logError: function( error )
		{
			var message = null;

			if ( 'undefined' == typeof error ) {
				return;
			}
			else if ( 'undefined' != typeof error.stack ) {
				message = error.stack;
			}
			else if ( 'undefined' != typeof error.message ) {
				message = error.message;
			}

			if ( message ) {
				FLBuilder.log( '************************************************************************' );
				FLBuilder.log( FLBuilderStrings.errorMessage );
				FLBuilder.log( message );
				FLBuilder.log( '************************************************************************' );
			}
		},

		/**
		 * Logs a global error in the console if the console is available.
		 *
		 * @since 1.4.6
		 * @method logGlobalError
		 * @param {String} message
		 * @param {String} file
		 * @param {String} line
		 * @param {String} col
		 * @param {String} error
		 */
		logGlobalError: function( message, file, line, col, error )
		{
			FLBuilder.log( '************************************************************************' );
			FLBuilder.log( FLBuilderStrings.errorMessage );
			FLBuilder.log( FLBuilderStrings.globalErrorMessage.replace( '{message}', message ).replace( '{line}', line ).replace( '{file}', file ) );

			if ( 'undefined' != typeof error && 'undefined' != typeof error.stack ) {
				FLBuilder.log( error.stack );
				FLBuilder.log( '************************************************************************' );
			}
		},
	};

	/* Start the party!!! */
	$(function(){
		FLBuilder._init();
	});

})(jQuery);
