var ns4=document.layers
	var ie4=document.all
	var ns6=document.getElementById&&!document.all
	var isMac = (navigator.appVersion.indexOf("Mac")!=-1) ? true : false;

	var popup;
	var overlay;

	var proto;

	if (location.protocol == 'https:'){
		proto = 'https://' + location.hostname + '/';
	}
	else {
		proto = '';
	}

	function getcookie(cookiename)
		{
			 var cookiestring=""+document.cookie;
			 var index1=cookiestring.indexOf(cookiename);
			 if (index1==-1 || cookiename=="") return "";
			 var index2=cookiestring.indexOf(';',index1);
			 if (index2==-1) index2=cookiestring.length;
			 return unescape(cookiestring.substring(index1+cookiename.length+1,index2));
		}


	function setcookie(name,value)
		{
			cookiestring=name+"="+escape(value);
			document.cookie=cookiestring;
			if(!getcookie(name))
			{
			return false;
			}
			else
			{
			return true;
			}
		}


	function ShowHelp(sender)
	{
		if(ie4)//if IE we must hide all dropdownlists. IE does not allow div tags to be positioned over them.
		{
			var selects = document.getElementsByTagName("select");
			for(var xx = 0; xx < selects.length; xx++)
			{
				selects[xx].style.visibility = "hidden";
			}
		}

		var loc = getCenter();
		popup = sender.parentNode.getElementsByTagName("div")[1];

		var width;
		var height;

		if (ie4)
		{
			width = isMac ? document.body.offsetWidth : document.body.scrollWidth;
			height = isMac ? document.body.offsetHeight : document.body.scrollHeight;
		}
		else if (ns4)
		{
			width = document.width;
			height = document.height;
		}
		else if (ns6)
		{
			width = document.body.offsetWidth+document.body.offsetLeft;
			height = document.body.offsetHeight+document.body.offsetTop;
		}

		//if(!overlay)
			overlay = createOverlayLayer();

		overlay.visibility = 'visible';

		if(popup.filters != null)
			popup.filters[0].apply();
		popup.style.position = "absolute";
		popup.style.top = loc.y - 290;
		popup.style.left = loc.x - 130;
		popup.style.display = "block";
		popup.style.visibility = "visible"
		if(popup.filters != null)
			popup.filters[0].play();
	}

	function hideHelp()
	{

		if(ie4)//show hidden dropdownlists
		{
			var selects = document.getElementsByTagName("select");
			for(var xx = 0; xx < selects.length; xx++)
			{
				selects[xx].style.visibility = "visible";
			}
		}

		if(popup)
		{
			overlay.visibility = 'hidden';

			if(popup.filters != null)
				popup.filters[0].apply();
			popup.style.visibility = "hidden";
			if(popup.filters != null)
				popup.filters[0].play();


			document.getElementById('overlay').parentNode.removeChild(document.getElementById('overlay'));
		}
	}


	function getCenter()
	{
		var clientHeight;
		var clientWidth;
		var docTop;
		var docLeft;

		if (ie4)
		{
			clientHeight = document.body.clientHeight;
			clientWidth = document.body.clientWidth;
			docTop = document.body.scrollTop;
			docLeft = document.body.scrollLeft;
		}
		else if (ns4 || ns6)
		{
			clientHeight = window.innerHeight - 20;
			clientWidth = window.innerWidth - 20;
			docTop = window.pageYOffset;
			docLeft = window.pageXOffset;
		}

		var loc = new Object();
		loc.x = docLeft + clientWidth/2;
		loc.y = docTop + clientHeight/2;
		return loc;
	}

	function createOverlayLayer()
	{
		var nL;
		var left = 0;
		var top = 0;
		var name = "overlay";
		var html = "";

		if (ie4)
		{
			var width = isMac ? document.body.offsetWidth : document.body.scrollWidth;
			var height = isMac ? document.body.offsetHeight : document.body.scrollHeight;
			var divhtml = '<div  id=' + name + ' style="visibility:visible;left:' + left +
				'px;top:' + top + 'px;width:' + width +
				'px;height:' + height + 'px;position:absolute; background: url(' + proto +
				'Images/TransOverlay.gif) repeat">' + html + '</div>';
			document.body.insertAdjacentHTML('beforeEnd', divhtml);
			nL = document.all[name].style
		}
		else if (ns4)
		{
			var width = document.width;
			var height = document.height;
			nL=new Layer(width);
			nL.name = name;
			nL.left=left;
			nL.top=top;
			nL.height = height;
			nL.clip.width = width;
			nL.clip.height = height;
			nL.visibility = "show";
			nL.background = "Images/TransOverlay.gif";
			nL.document.open();
			nL.document.write('<table background="' + proto +
				'Images/TransOverlay.gif"><tr><td><img src="' + proto +
				'Images/Spacer.gif" width="' + width + '" height="' + height +'"></td></tr></table>');
			nL.document.close();
		}
		else if (ns6)
		{
			var nL = document.createElement("DIV");
			nL.innerHTML = "";
			var mybody=document.body;
			mybody.appendChild(nL);
			nL.style.position = "absolute";
			nL.style.visibility = "visible";
			nL.style.left = left;
			nL.style.top = top;
			nL.style.width = document.body.offsetWidth+document.body.offsetLeft;
			nL.style.height = document.body.offsetHeight+document.body.offsetTop;
			nL.style.background = "url(" + proto + "Images/TransOverlay.gif)";
			nL.id = name;
			nL = nL.style;
		}
		return nL;
	}