--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/client/digitallibrary/jquery/ui/jquery.ui.dialog.js	Sun Feb 06 22:17:41 2011 +0100
@@ -0,0 +1,857 @@
+/*
+ * jQuery UI Dialog 1.8.9
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Dialog
+ *
+ * Depends:
+ *	jquery.ui.core.js
+ *	jquery.ui.widget.js
+ *  jquery.ui.button.js
+ *	jquery.ui.draggable.js
+ *	jquery.ui.mouse.js
+ *	jquery.ui.position.js
+ *	jquery.ui.resizable.js
+ */
+(function( $, undefined ) {
+
+var uiDialogClasses =
+		'ui-dialog ' +
+		'ui-widget ' +
+		'ui-widget-content ' +
+		'ui-corner-all ',
+	sizeRelatedOptions = {
+		buttons: true,
+		height: true,
+		maxHeight: true,
+		maxWidth: true,
+		minHeight: true,
+		minWidth: true,
+		width: true
+	},
+	resizableRelatedOptions = {
+		maxHeight: true,
+		maxWidth: true,
+		minHeight: true,
+		minWidth: true
+	};
+
+$.widget("ui.dialog", {
+	options: {
+		autoOpen: true,
+		buttons: {},
+		closeOnEscape: true,
+		closeText: 'close',
+		dialogClass: '',
+		draggable: true,
+		hide: null,
+		height: 'auto',
+		maxHeight: false,
+		maxWidth: false,
+		minHeight: 150,
+		minWidth: 150,
+		modal: false,
+		position: {
+			my: 'center',
+			at: 'center',
+			collision: 'fit',
+			// ensure that the titlebar is never outside the document
+			using: function(pos) {
+				var topOffset = $(this).css(pos).offset().top;
+				if (topOffset < 0) {
+					$(this).css('top', pos.top - topOffset);
+				}
+			}
+		},
+		resizable: true,
+		show: null,
+		stack: true,
+		title: '',
+		width: 300,
+		zIndex: 1000
+	},
+
+	_create: function() {
+		this.originalTitle = this.element.attr('title');
+		// #5742 - .attr() might return a DOMElement
+		if ( typeof this.originalTitle !== "string" ) {
+			this.originalTitle = "";
+		}
+
+		this.options.title = this.options.title || this.originalTitle;
+		var self = this,
+			options = self.options,
+
+			title = options.title || '&#160;',
+			titleId = $.ui.dialog.getTitleId(self.element),
+
+			uiDialog = (self.uiDialog = $('<div></div>'))
+				.appendTo(document.body)
+				.hide()
+				.addClass(uiDialogClasses + options.dialogClass)
+				.css({
+					zIndex: options.zIndex
+				})
+				// setting tabIndex makes the div focusable
+				// setting outline to 0 prevents a border on focus in Mozilla
+				.attr('tabIndex', -1).css('outline', 0).keydown(function(event) {
+					if (options.closeOnEscape && event.keyCode &&
+						event.keyCode === $.ui.keyCode.ESCAPE) {
+						
+						self.close(event);
+						event.preventDefault();
+					}
+				})
+				.attr({
+					role: 'dialog',
+					'aria-labelledby': titleId
+				})
+				.mousedown(function(event) {
+					self.moveToTop(false, event);
+				}),
+
+			uiDialogContent = self.element
+				.show()
+				.removeAttr('title')
+				.addClass(
+					'ui-dialog-content ' +
+					'ui-widget-content')
+				.appendTo(uiDialog),
+
+			uiDialogTitlebar = (self.uiDialogTitlebar = $('<div></div>'))
+				.addClass(
+					'ui-dialog-titlebar ' +
+					'ui-widget-header ' +
+					'ui-corner-all ' +
+					'ui-helper-clearfix'
+				)
+				.prependTo(uiDialog),
+
+			uiDialogTitlebarClose = $('<a href="#"></a>')
+				.addClass(
+					'ui-dialog-titlebar-close ' +
+					'ui-corner-all'
+				)
+				.attr('role', 'button')
+				.hover(
+					function() {
+						uiDialogTitlebarClose.addClass('ui-state-hover');
+					},
+					function() {
+						uiDialogTitlebarClose.removeClass('ui-state-hover');
+					}
+				)
+				.focus(function() {
+					uiDialogTitlebarClose.addClass('ui-state-focus');
+				})
+				.blur(function() {
+					uiDialogTitlebarClose.removeClass('ui-state-focus');
+				})
+				.click(function(event) {
+					self.close(event);
+					return false;
+				})
+				.appendTo(uiDialogTitlebar),
+
+			uiDialogTitlebarCloseText = (self.uiDialogTitlebarCloseText = $('<span></span>'))
+				.addClass(
+					'ui-icon ' +
+					'ui-icon-closethick'
+				)
+				.text(options.closeText)
+				.appendTo(uiDialogTitlebarClose),
+
+			uiDialogTitle = $('<span></span>')
+				.addClass('ui-dialog-title')
+				.attr('id', titleId)
+				.html(title)
+				.prependTo(uiDialogTitlebar);
+
+		//handling of deprecated beforeclose (vs beforeClose) option
+		//Ticket #4669 http://dev.jqueryui.com/ticket/4669
+		//TODO: remove in 1.9pre
+		if ($.isFunction(options.beforeclose) && !$.isFunction(options.beforeClose)) {
+			options.beforeClose = options.beforeclose;
+		}
+
+		uiDialogTitlebar.find("*").add(uiDialogTitlebar).disableSelection();
+
+		if (options.draggable && $.fn.draggable) {
+			self._makeDraggable();
+		}
+		if (options.resizable && $.fn.resizable) {
+			self._makeResizable();
+		}
+
+		self._createButtons(options.buttons);
+		self._isOpen = false;
+
+		if ($.fn.bgiframe) {
+			uiDialog.bgiframe();
+		}
+	},
+
+	_init: function() {
+		if ( this.options.autoOpen ) {
+			this.open();
+		}
+	},
+
+	destroy: function() {
+		var self = this;
+		
+		if (self.overlay) {
+			self.overlay.destroy();
+		}
+		self.uiDialog.hide();
+		self.element
+			.unbind('.dialog')
+			.removeData('dialog')
+			.removeClass('ui-dialog-content ui-widget-content')
+			.hide().appendTo('body');
+		self.uiDialog.remove();
+
+		if (self.originalTitle) {
+			self.element.attr('title', self.originalTitle);
+		}
+
+		return self;
+	},
+
+	widget: function() {
+		return this.uiDialog;
+	},
+
+	close: function(event) {
+		var self = this,
+			maxZ, thisZ;
+		
+		if (false === self._trigger('beforeClose', event)) {
+			return;
+		}
+
+		if (self.overlay) {
+			self.overlay.destroy();
+		}
+		self.uiDialog.unbind('keypress.ui-dialog');
+
+		self._isOpen = false;
+
+		if (self.options.hide) {
+			self.uiDialog.hide(self.options.hide, function() {
+				self._trigger('close', event);
+			});
+		} else {
+			self.uiDialog.hide();
+			self._trigger('close', event);
+		}
+
+		$.ui.dialog.overlay.resize();
+
+		// adjust the maxZ to allow other modal dialogs to continue to work (see #4309)
+		if (self.options.modal) {
+			maxZ = 0;
+			$('.ui-dialog').each(function() {
+				if (this !== self.uiDialog[0]) {
+					thisZ = $(this).css('z-index');
+					if(!isNaN(thisZ)) {
+						maxZ = Math.max(maxZ, thisZ);
+					}
+				}
+			});
+			$.ui.dialog.maxZ = maxZ;
+		}
+
+		return self;
+	},
+
+	isOpen: function() {
+		return this._isOpen;
+	},
+
+	// the force parameter allows us to move modal dialogs to their correct
+	// position on open
+	moveToTop: function(force, event) {
+		var self = this,
+			options = self.options,
+			saveScroll;
+
+		if ((options.modal && !force) ||
+			(!options.stack && !options.modal)) {
+			return self._trigger('focus', event);
+		}
+
+		if (options.zIndex > $.ui.dialog.maxZ) {
+			$.ui.dialog.maxZ = options.zIndex;
+		}
+		if (self.overlay) {
+			$.ui.dialog.maxZ += 1;
+			self.overlay.$el.css('z-index', $.ui.dialog.overlay.maxZ = $.ui.dialog.maxZ);
+		}
+
+		//Save and then restore scroll since Opera 9.5+ resets when parent z-Index is changed.
+		//  http://ui.jquery.com/bugs/ticket/3193
+		saveScroll = { scrollTop: self.element.attr('scrollTop'), scrollLeft: self.element.attr('scrollLeft') };
+		$.ui.dialog.maxZ += 1;
+		self.uiDialog.css('z-index', $.ui.dialog.maxZ);
+		self.element.attr(saveScroll);
+		self._trigger('focus', event);
+
+		return self;
+	},
+
+	open: function() {
+		if (this._isOpen) { return; }
+
+		var self = this,
+			options = self.options,
+			uiDialog = self.uiDialog;
+
+		self.overlay = options.modal ? new $.ui.dialog.overlay(self) : null;
+		self._size();
+		self._position(options.position);
+		uiDialog.show(options.show);
+		self.moveToTop(true);
+
+		// prevent tabbing out of modal dialogs
+		if (options.modal) {
+			uiDialog.bind('keypress.ui-dialog', function(event) {
+				if (event.keyCode !== $.ui.keyCode.TAB) {
+					return;
+				}
+
+				var tabbables = $(':tabbable', this),
+					first = tabbables.filter(':first'),
+					last  = tabbables.filter(':last');
+
+				if (event.target === last[0] && !event.shiftKey) {
+					first.focus(1);
+					return false;
+				} else if (event.target === first[0] && event.shiftKey) {
+					last.focus(1);
+					return false;
+				}
+			});
+		}
+
+		// set focus to the first tabbable element in the content area or the first button
+		// if there are no tabbable elements, set focus on the dialog itself
+		$(self.element.find(':tabbable').get().concat(
+			uiDialog.find('.ui-dialog-buttonpane :tabbable').get().concat(
+				uiDialog.get()))).eq(0).focus();
+
+		self._isOpen = true;
+		self._trigger('open');
+
+		return self;
+	},
+
+	_createButtons: function(buttons) {
+		var self = this,
+			hasButtons = false,
+			uiDialogButtonPane = $('<div></div>')
+				.addClass(
+					'ui-dialog-buttonpane ' +
+					'ui-widget-content ' +
+					'ui-helper-clearfix'
+				),
+			uiButtonSet = $( "<div></div>" )
+				.addClass( "ui-dialog-buttonset" )
+				.appendTo( uiDialogButtonPane );
+
+		// if we already have a button pane, remove it
+		self.uiDialog.find('.ui-dialog-buttonpane').remove();
+
+		if (typeof buttons === 'object' && buttons !== null) {
+			$.each(buttons, function() {
+				return !(hasButtons = true);
+			});
+		}
+		if (hasButtons) {
+			$.each(buttons, function(name, props) {
+				props = $.isFunction( props ) ?
+					{ click: props, text: name } :
+					props;
+				var button = $('<button type="button"></button>')
+					.attr( props, true )
+					.unbind('click')
+					.click(function() {
+						props.click.apply(self.element[0], arguments);
+					})
+					.appendTo(uiButtonSet);
+				if ($.fn.button) {
+					button.button();
+				}
+			});
+			uiDialogButtonPane.appendTo(self.uiDialog);
+		}
+	},
+
+	_makeDraggable: function() {
+		var self = this,
+			options = self.options,
+			doc = $(document),
+			heightBeforeDrag;
+
+		function filteredUi(ui) {
+			return {
+				position: ui.position,
+				offset: ui.offset
+			};
+		}
+
+		self.uiDialog.draggable({
+			cancel: '.ui-dialog-content, .ui-dialog-titlebar-close',
+			handle: '.ui-dialog-titlebar',
+			containment: 'document',
+			start: function(event, ui) {
+				heightBeforeDrag = options.height === "auto" ? "auto" : $(this).height();
+				$(this).height($(this).height()).addClass("ui-dialog-dragging");
+				self._trigger('dragStart', event, filteredUi(ui));
+			},
+			drag: function(event, ui) {
+				self._trigger('drag', event, filteredUi(ui));
+			},
+			stop: function(event, ui) {
+				options.position = [ui.position.left - doc.scrollLeft(),
+					ui.position.top - doc.scrollTop()];
+				$(this).removeClass("ui-dialog-dragging").height(heightBeforeDrag);
+				self._trigger('dragStop', event, filteredUi(ui));
+				$.ui.dialog.overlay.resize();
+			}
+		});
+	},
+
+	_makeResizable: function(handles) {
+		handles = (handles === undefined ? this.options.resizable : handles);
+		var self = this,
+			options = self.options,
+			// .ui-resizable has position: relative defined in the stylesheet
+			// but dialogs have to use absolute or fixed positioning
+			position = self.uiDialog.css('position'),
+			resizeHandles = (typeof handles === 'string' ?
+				handles	:
+				'n,e,s,w,se,sw,ne,nw'
+			);
+
+		function filteredUi(ui) {
+			return {
+				originalPosition: ui.originalPosition,
+				originalSize: ui.originalSize,
+				position: ui.position,
+				size: ui.size
+			};
+		}
+
+		self.uiDialog.resizable({
+			cancel: '.ui-dialog-content',
+			containment: 'document',
+			alsoResize: self.element,
+			maxWidth: options.maxWidth,
+			maxHeight: options.maxHeight,
+			minWidth: options.minWidth,
+			minHeight: self._minHeight(),
+			handles: resizeHandles,
+			start: function(event, ui) {
+				$(this).addClass("ui-dialog-resizing");
+				self._trigger('resizeStart', event, filteredUi(ui));
+			},
+			resize: function(event, ui) {
+				self._trigger('resize', event, filteredUi(ui));
+			},
+			stop: function(event, ui) {
+				$(this).removeClass("ui-dialog-resizing");
+				options.height = $(this).height();
+				options.width = $(this).width();
+				self._trigger('resizeStop', event, filteredUi(ui));
+				$.ui.dialog.overlay.resize();
+			}
+		})
+		.css('position', position)
+		.find('.ui-resizable-se').addClass('ui-icon ui-icon-grip-diagonal-se');
+	},
+
+	_minHeight: function() {
+		var options = this.options;
+
+		if (options.height === 'auto') {
+			return options.minHeight;
+		} else {
+			return Math.min(options.minHeight, options.height);
+		}
+	},
+
+	_position: function(position) {
+		var myAt = [],
+			offset = [0, 0],
+			isVisible;
+
+		if (position) {
+			// deep extending converts arrays to objects in jQuery <= 1.3.2 :-(
+	//		if (typeof position == 'string' || $.isArray(position)) {
+	//			myAt = $.isArray(position) ? position : position.split(' ');
+
+			if (typeof position === 'string' || (typeof position === 'object' && '0' in position)) {
+				myAt = position.split ? position.split(' ') : [position[0], position[1]];
+				if (myAt.length === 1) {
+					myAt[1] = myAt[0];
+				}
+
+				$.each(['left', 'top'], function(i, offsetPosition) {
+					if (+myAt[i] === myAt[i]) {
+						offset[i] = myAt[i];
+						myAt[i] = offsetPosition;
+					}
+				});
+
+				position = {
+					my: myAt.join(" "),
+					at: myAt.join(" "),
+					offset: offset.join(" ")
+				};
+			} 
+
+			position = $.extend({}, $.ui.dialog.prototype.options.position, position);
+		} else {
+			position = $.ui.dialog.prototype.options.position;
+		}
+
+		// need to show the dialog to get the actual offset in the position plugin
+		isVisible = this.uiDialog.is(':visible');
+		if (!isVisible) {
+			this.uiDialog.show();
+		}
+		this.uiDialog
+			// workaround for jQuery bug #5781 http://dev.jquery.com/ticket/5781
+			.css({ top: 0, left: 0 })
+			.position($.extend({ of: window }, position));
+		if (!isVisible) {
+			this.uiDialog.hide();
+		}
+	},
+
+	_setOptions: function( options ) {
+		var self = this,
+			resizableOptions = {},
+			resize = false;
+
+		$.each( options, function( key, value ) {
+			self._setOption( key, value );
+			
+			if ( key in sizeRelatedOptions ) {
+				resize = true;
+			}
+			if ( key in resizableRelatedOptions ) {
+				resizableOptions[ key ] = value;
+			}
+		});
+
+		if ( resize ) {
+			this._size();
+		}
+		if ( this.uiDialog.is( ":data(resizable)" ) ) {
+			this.uiDialog.resizable( "option", resizableOptions );
+		}
+	},
+
+	_setOption: function(key, value){
+		var self = this,
+			uiDialog = self.uiDialog;
+
+		switch (key) {
+			//handling of deprecated beforeclose (vs beforeClose) option
+			//Ticket #4669 http://dev.jqueryui.com/ticket/4669
+			//TODO: remove in 1.9pre
+			case "beforeclose":
+				key = "beforeClose";
+				break;
+			case "buttons":
+				self._createButtons(value);
+				break;
+			case "closeText":
+				// ensure that we always pass a string
+				self.uiDialogTitlebarCloseText.text("" + value);
+				break;
+			case "dialogClass":
+				uiDialog
+					.removeClass(self.options.dialogClass)
+					.addClass(uiDialogClasses + value);
+				break;
+			case "disabled":
+				if (value) {
+					uiDialog.addClass('ui-dialog-disabled');
+				} else {
+					uiDialog.removeClass('ui-dialog-disabled');
+				}
+				break;
+			case "draggable":
+				var isDraggable = uiDialog.is( ":data(draggable)" );
+				if ( isDraggable && !value ) {
+					uiDialog.draggable( "destroy" );
+				}
+				
+				if ( !isDraggable && value ) {
+					self._makeDraggable();
+				}
+				break;
+			case "position":
+				self._position(value);
+				break;
+			case "resizable":
+				// currently resizable, becoming non-resizable
+				var isResizable = uiDialog.is( ":data(resizable)" );
+				if (isResizable && !value) {
+					uiDialog.resizable('destroy');
+				}
+
+				// currently resizable, changing handles
+				if (isResizable && typeof value === 'string') {
+					uiDialog.resizable('option', 'handles', value);
+				}
+
+				// currently non-resizable, becoming resizable
+				if (!isResizable && value !== false) {
+					self._makeResizable(value);
+				}
+				break;
+			case "title":
+				// convert whatever was passed in o a string, for html() to not throw up
+				$(".ui-dialog-title", self.uiDialogTitlebar).html("" + (value || '&#160;'));
+				break;
+		}
+
+		$.Widget.prototype._setOption.apply(self, arguments);
+	},
+
+	_size: function() {
+		/* If the user has resized the dialog, the .ui-dialog and .ui-dialog-content
+		 * divs will both have width and height set, so we need to reset them
+		 */
+		var options = this.options,
+			nonContentHeight,
+			minContentHeight,
+			isVisible = this.uiDialog.is( ":visible" );
+
+		// reset content sizing
+		this.element.show().css({
+			width: 'auto',
+			minHeight: 0,
+			height: 0
+		});
+
+		if (options.minWidth > options.width) {
+			options.width = options.minWidth;
+		}
+
+		// reset wrapper sizing
+		// determine the height of all the non-content elements
+		nonContentHeight = this.uiDialog.css({
+				height: 'auto',
+				width: options.width
+			})
+			.height();
+		minContentHeight = Math.max( 0, options.minHeight - nonContentHeight );
+		
+		if ( options.height === "auto" ) {
+			// only needed for IE6 support
+			if ( $.support.minHeight ) {
+				this.element.css({
+					minHeight: minContentHeight,
+					height: "auto"
+				});
+			} else {
+				this.uiDialog.show();
+				var autoHeight = this.element.css( "height", "auto" ).height();
+				if ( !isVisible ) {
+					this.uiDialog.hide();
+				}
+				this.element.height( Math.max( autoHeight, minContentHeight ) );
+			}
+		} else {
+			this.element.height( Math.max( options.height - nonContentHeight, 0 ) );
+		}
+
+		if (this.uiDialog.is(':data(resizable)')) {
+			this.uiDialog.resizable('option', 'minHeight', this._minHeight());
+		}
+	}
+});
+
+$.extend($.ui.dialog, {
+	version: "1.8.9",
+
+	uuid: 0,
+	maxZ: 0,
+
+	getTitleId: function($el) {
+		var id = $el.attr('id');
+		if (!id) {
+			this.uuid += 1;
+			id = this.uuid;
+		}
+		return 'ui-dialog-title-' + id;
+	},
+
+	overlay: function(dialog) {
+		this.$el = $.ui.dialog.overlay.create(dialog);
+	}
+});
+
+$.extend($.ui.dialog.overlay, {
+	instances: [],
+	// reuse old instances due to IE memory leak with alpha transparency (see #5185)
+	oldInstances: [],
+	maxZ: 0,
+	events: $.map('focus,mousedown,mouseup,keydown,keypress,click'.split(','),
+		function(event) { return event + '.dialog-overlay'; }).join(' '),
+	create: function(dialog) {
+		if (this.instances.length === 0) {
+			// prevent use of anchors and inputs
+			// we use a setTimeout in case the overlay is created from an
+			// event that we're going to be cancelling (see #2804)
+			setTimeout(function() {
+				// handle $(el).dialog().dialog('close') (see #4065)
+				if ($.ui.dialog.overlay.instances.length) {
+					$(document).bind($.ui.dialog.overlay.events, function(event) {
+						// stop events if the z-index of the target is < the z-index of the overlay
+						// we cannot return true when we don't want to cancel the event (#3523)
+						if ($(event.target).zIndex() < $.ui.dialog.overlay.maxZ) {
+							return false;
+						}
+					});
+				}
+			}, 1);
+
+			// allow closing by pressing the escape key
+			$(document).bind('keydown.dialog-overlay', function(event) {
+				if (dialog.options.closeOnEscape && event.keyCode &&
+					event.keyCode === $.ui.keyCode.ESCAPE) {
+					
+					dialog.close(event);
+					event.preventDefault();
+				}
+			});
+
+			// handle window resize
+			$(window).bind('resize.dialog-overlay', $.ui.dialog.overlay.resize);
+		}
+
+		var $el = (this.oldInstances.pop() || $('<div></div>').addClass('ui-widget-overlay'))
+			.appendTo(document.body)
+			.css({
+				width: this.width(),
+				height: this.height()
+			});
+
+		if ($.fn.bgiframe) {
+			$el.bgiframe();
+		}
+
+		this.instances.push($el);
+		return $el;
+	},
+
+	destroy: function($el) {
+		var indexOf = $.inArray($el, this.instances);
+		if (indexOf != -1){
+			this.oldInstances.push(this.instances.splice(indexOf, 1)[0]);
+		}
+
+		if (this.instances.length === 0) {
+			$([document, window]).unbind('.dialog-overlay');
+		}
+
+		$el.remove();
+		
+		// adjust the maxZ to allow other modal dialogs to continue to work (see #4309)
+		var maxZ = 0;
+		$.each(this.instances, function() {
+			maxZ = Math.max(maxZ, this.css('z-index'));
+		});
+		this.maxZ = maxZ;
+	},
+
+	height: function() {
+		var scrollHeight,
+			offsetHeight;
+		// handle IE 6
+		if ($.browser.msie && $.browser.version < 7) {
+			scrollHeight = Math.max(
+				document.documentElement.scrollHeight,
+				document.body.scrollHeight
+			);
+			offsetHeight = Math.max(
+				document.documentElement.offsetHeight,
+				document.body.offsetHeight
+			);
+
+			if (scrollHeight < offsetHeight) {
+				return $(window).height() + 'px';
+			} else {
+				return scrollHeight + 'px';
+			}
+		// handle "good" browsers
+		} else {
+			return $(document).height() + 'px';
+		}
+	},
+
+	width: function() {
+		var scrollWidth,
+			offsetWidth;
+		// handle IE 6
+		if ($.browser.msie && $.browser.version < 7) {
+			scrollWidth = Math.max(
+				document.documentElement.scrollWidth,
+				document.body.scrollWidth
+			);
+			offsetWidth = Math.max(
+				document.documentElement.offsetWidth,
+				document.body.offsetWidth
+			);
+
+			if (scrollWidth < offsetWidth) {
+				return $(window).width() + 'px';
+			} else {
+				return scrollWidth + 'px';
+			}
+		// handle "good" browsers
+		} else {
+			return $(document).width() + 'px';
+		}
+	},
+
+	resize: function() {
+		/* If the dialog is draggable and the user drags it past the
+		 * right edge of the window, the document becomes wider so we
+		 * need to stretch the overlay. If the user then drags the
+		 * dialog back to the left, the document will become narrower,
+		 * so we need to shrink the overlay to the appropriate size.
+		 * This is handled by shrinking the overlay before setting it
+		 * to the full document size.
+		 */
+		var $overlays = $([]);
+		$.each($.ui.dialog.overlay.instances, function() {
+			$overlays = $overlays.add(this);
+		});
+
+		$overlays.css({
+			width: 0,
+			height: 0
+		}).css({
+			width: $.ui.dialog.overlay.width(),
+			height: $.ui.dialog.overlay.height()
+		});
+	}
+});
+
+$.extend($.ui.dialog.overlay.prototype, {
+	destroy: function() {
+		$.ui.dialog.overlay.destroy(this.$el);
+	}
+});
+
+}(jQuery));