Sys.UI._ModalUpdateProgress=function(element) {
	Sys.UI._ModalUpdateProgress.initializeBase(this,[element]);
	
	this._backgroundCssClass = null;
	this._cancelControlID = null;
	this._backgroundElement = null;
	this._foregroundElement = null;
	this._cancelHandler = null;
	this._loadHandler=null;
	this._scrollHandler = null;
	this._resizeHandler = null;
	this._windowHandlersAttached = false;
	this._beginRequestHandlerDelegate = null;
	this._startDelegate = null;
	this._endRequestHandlerDelegate = null;
	this._pageRequestManager = null;
	this._timerCookie = null;
	this._saveTabIndexes = new Array();
	this._saveDisableSelect = new Array();
	this._tagWithTabIndex = new Array("A","AREA","BUTTON","INPUT","OBJECT","SELECT","TEXTAREA","IFRAME");
	this._disableTabsCalled = false;
}
Sys.UI._ModalUpdateProgress.prototype={
	initialize:function(){
		Sys.UI._ModalUpdateProgress.callBaseMethod(this, "initialize");
		
		this._foregroundElement = this.get_element();
		this._backgroundElement = document.createElement("div");
		this._backgroundElement.style.display = "none";
		this._backgroundElement.style.position = "absolute";
		this._backgroundElement.style.zIndex = 100000;
		if(this._backgroundCssClass)
			this._backgroundElement.className = this._backgroundCssClass;

		this._loadHandler=Function.createDelegate(this,this._onLoad);
		$addHandler(window,"load",this._loadHandler);

		if(this._cancelControlID)
		{
			this._cancelHandler = Function.createDelegate(this, this._onCancel);
			$addHandler($get(this._cancelControlID), "click", this._cancelHandler);
		}

		this._scrollHandler = Function.createDelegate(this, this._onLayout);
		this._resizeHandler = Function.createDelegate(this, this._onLayout);

		this._beginRequestHandlerDelegate = Function.createDelegate(this, this._handleBeginRequest);
		this._endRequestHandlerDelegate = Function.createDelegate(this, this._handleEndRequest);
		this._startDelegate = Function.createDelegate(this, this._startRequest);
		if(Sys.WebForms && Sys.WebForms.PageRequestManager)
			this._pageRequestManager = Sys.WebForms.PageRequestManager.getInstance();
		if(this._pageRequestManager !== null)
		{
			this._pageRequestManager.add_beginRequest(this._beginRequestHandlerDelegate);
			this._pageRequestManager.add_endRequest(this._endRequestHandlerDelegate);
		}
	},
	dispose:function(){
		this._detachPopup();
		this._scrollHandler = null;
		this._resizeHandler = null;
		if(this._cancelHandler && $get(this._cancelControlID))
		{
			$removeHandler($get(this._cancelControlID), "click", this._cancelHandler);
			this._cancelHandler = null;
		}
		if(this._pageRequestManager !== null)
		{
			this._pageRequestManager.remove_beginRequest(this._beginRequestHandlerDelegate);
			this._pageRequestManager.remove_endRequest(this._endRequestHandlerDelegate);
		}
		Sys.UI._ModalUpdateProgress.callBaseMethod(this,"dispose");
	},
	get_backgroundCssClass:function(){ return this._backgroundCssClass; },
	set_backgroundCssClass:function(value){ this._backgroundCssClass = value; },
	get_cancelControlID:function(){ return this._cancelControlID; },
	set_cancelControlID:function(value){ this._cancelControlID = value; },
	_attachPopup:function(){
		if(!this._windowHandlersAttached)
			return;
		if(!this._scrollHandler)
			this._scrollHandler = Function.createDelegate(this, this._onLayout);
		if(!this._resizeHandler)
			this._resizeHandler = Function.createDelegate(this, this._onLayout);
		$addHandler(window, "resize", this._resizeHandler);
		$addHandler(window, "scroll", this._scrollHandler);
		this._windowHandlersAttached = true;
	},
	_detachPopup:function(){
		if(this._windowHandlersAttached)
		{
			if(this._scrollHandler)
				$removeHandler(window, "scroll", this._scrollHandler);
			if(this._resizeHandler)
				$removeHandler(window, "resize", this._resizeHandler);
		}
	},
	_onCancel:function(e){
		var element = $get(this._cancelControlID);
		if(element && !element.disabled)
		{
			if(this._pageRequestManager !== null)
				this._pageRequestManager.abortPostBack();
			this._hide();
			e.preventDefault();
			return false;
		}
	},
	_onLayout:function(e){
		this._layout();
	},
	_onLoad:function(e){
		document.documentElement.appendChild(this._backgroundElement);
		//this._foregroundElement.parentNode.appendChild(this._backgroundElement);
		this._foregroundElement.style.display = "none";
		this._foregroundElement.style.position = "absolute";
		this._foregroundElement.style.zIndex = this._getCurrentStyle(this._backgroundElement, "zIndex", this._backgroundElement.style.zIndex) + 1;
	},
	_layout:function(){
		var scrollLeft = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);
		var scrollTop = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);
		var clientWidth;
		if(window.innerWidth)
			clientWidth = ((Sys.Browser.agent === Sys.Browser.Safari) ? window.innerWidth : Math.min(window.innerWidth, document.documentElement.clientWidth));
		else
			clientWidth = document.documentElement.clientWidth;
		var clientHeight;
		if(window.innerHeight)
			clientHeight = ((Sys.Browser.agent === Sys.Browser.Safari) ? window.innerHeight : Math.min(window.innerHeight, document.documentElement.clientHeight));
		else
			clientHeight = document.documentElement.clientHeight;
		this._backgroundElement.style.left = scrollLeft+"px";
		this._backgroundElement.style.top = scrollTop+"px";
		this._backgroundElement.style.width = clientWidth+"px";
		this._backgroundElement.style.height = clientHeight+"px";
		this._foregroundElement.style.left = scrollLeft+((clientWidth-this._foregroundElement.offsetWidth)/2)+"px";
		this._foregroundElement.style.top = scrollTop+((clientHeight-this._foregroundElement.offsetHeight)/2)+"px";
	},
	_show:function(){
		this._attachPopup();
		this._backgroundElement.style.display = "";
		if(this._dynamicLayout)
			this._foregroundElement.style.display = "block";
		else
			this._foregroundElement.style.visibility = "visible";
		this._disableTabs();
		this._layout();
		this._layout();
	},
	_disableTabs:function(){
		if(!this._disableTabsCalled)
		{
			var i = 0;
			var tagElements;
			var tagElementsInPopUp = new Array();
			Array.clear(this._saveTabIndexes);
			for(var j = 0; j < this._tagWithTabIndex.length; j++)
			{
				tagElements = this._foregroundElement.getElementsByTagName(this._tagWithTabIndex[j]);
				for(var k = 0 ; k < tagElements.length; k++)
				{
					tagElementsInPopUp[i] = tagElements[k];
					i++;
				}
			}
			i = 0;
			for(var j = 0; j < this._tagWithTabIndex.length; j++)
			{
				tagElements = document.getElementsByTagName(this._tagWithTabIndex[j]);
				for(var k = 0 ; k < tagElements.length; k++)
				{
					if(Array.indexOf(tagElementsInPopUp, tagElements[k]) == -1)
					{
						this._saveTabIndexes[i] = {tag: tagElements[k], index: tagElements[k].tabIndex};
						tagElements[k].tabIndex="-1";
						i++;
					}
				}
			}
			i = 0;
			if(Sys.Browser.agent == Sys.Browser.InternetExplorer && Sys.Browser.version < 7)
			{
				var tagSelectInPopUp = new Array();
				tagElements = this._foregroundElement.getElementsByTagName("SELECT");
				for(var k = 0 ; k < tagElements.length; k++)
				{
					tagSelectInPopUp[i] = tagElements[k];
					i++;
				}
				i = 0;
				Array.clear(this._saveDisableSelect);
				tagElements = document.getElementsByTagName("SELECT");
				for(var k = 0; k < tagElements.length; k++) {
					if(Array.indexOf(tagSelectInPopUp, tagElements[k]) == -1)
					{
						this._saveDisableSelect[i] = {tag: tagElements[k], visib: this._getCurrentStyle(tagElements[k], "visibility")};
						tagElements[k].style.visibility = "hidden";
						i++;
					}
				}
			}
			this._disableTabsCalled = true;
		}
	},
	_restoreTabs:function(){
		if(this._disableTabsCalled)
		{
			for(var i = 0; i < this._saveTabIndexes.length; i++)
				this._saveTabIndexes[i].tag.tabIndex = this._saveTabIndexes[i].index;
			if(Sys.Browser.agent == Sys.Browser.InternetExplorer && Sys.Browser.version < 7)
				for(var k = 0; k < this._saveDisableSelect.length; k++)
					this._saveDisableSelect[k].tag.style.visibility = this._saveDisableSelect[k].visib;
			this._disableTabsCalled = false;
		}
	},
	_hide:function(){
		this._backgroundElement.style.display = "none";
		this._foregroundElement.style.display = "none";
		this._restoreTabs();
		this._detachPopup();
	},
	_handleBeginRequest:function(sender,arg){
		var curElem = arg.get_postBackElement();
		var showProgress = !this._associatedUpdatePanelId;
		while(!showProgress && curElem)
		{
			if(curElem.id && this._associatedUpdatePanelId == curElem.id)
				showProgress = true;
			curElem = curElem.parentNode;
		}
		if(showProgress)
			this._timerCookie = window.setTimeout(this._startDelegate, this._displayAfter);
	},
	_startRequest:function(){
		if(this._pageRequestManager.get_isInAsyncPostBack())
			this._show();
		this._timerCookie = null;
	},
	_handleEndRequest:function(sender,arg){
		this._hide();
		if(this._timerCookie)
		{
			window.clearTimeout(this._timerCookie);
			this._timerCookie = null;
		}
	},
	_getCurrentStyle:function(element, attribute, defaultValue) {
		var currentValue = null;
		if(element)
		{
			if(element.currentStyle)
				currentValue = element.currentStyle[attribute];
			else if(document.defaultView && document.defaultView.getComputedStyle)
			{
				var style = document.defaultView.getComputedStyle(element, null);
				if(style)
					currentValue = style[attribute];
			}

			if(!currentValue && element.style.getPropertyValue)
				currentValue = element.style.getPropertyValue(attribute);
			else if(!currentValue && element.style.getAttribute)
				currentValue = element.style.getAttribute(attribute);
		}

		if((!currentValue || currentValue == "" || typeof(currentValue) == "undefined"))
		{
			if(typeof(defaultValue) != "undefined")
				currentValue = defaultValue;
			else
				currentValue = null;
		}
		return currentValue;
	}
}

Sys.UI._ModalUpdateProgress.registerClass("Sys.UI._ModalUpdateProgress", Sys.UI._UpdateProgress);
if(typeof(Sys)!=='undefined')Sys.Application.notifyScriptLoaded();
if(typeof(Sys)!=='undefined')Sys.Application.notifyScriptLoaded();