function openWindow(page)
{
	if (page.indexOf("http") == 0)
	{	
		var pageTracker = _gat._getTracker("UA-2132028-2");
		pageTracker._initData();
		pageTracker._trackPageview("external/" +page);
	}
        window.open(page,"_blank");
}
		
function showpopup(id)
{
	//get the page
	var page = id + ".html";
	var xmlHttp = ajaxFunction();
	xmlHttp.onreadystatechange = function ()
	{
	if(xmlHttp.readyState==4)
	  {
	  	var pageTracker = _gat._getTracker("UA-2132028-2");
		pageTracker._initData();
		pageTracker._trackPageview(page);
		var showDiv = document.getElementById("casestudies");
		var cover = document.getElementById("cover");
		var closeTab = document.getElementById("closecs");
		showDiv.innerHTML = xmlHttp.responseText;
		cover.style.display = "inline";
		showDiv.style.display = "inline";
		closeTab.style.display = "inline";
		}
	}
	//retrieve the page
	xmlHttp.open("GET",page,true);
	xmlHttp.send(null);
}
function hidepopup()
{
	var cover = document.getElementById("cover");
	var closeTab = document.getElementById("closecs");
	var showDiv = document.getElementById("casestudies");
	cover.style.display = "none";
	closeTab.style.display = "none";
	showDiv.style.display = "none";
}