HTTP.prototype.getText = function(url,  el, section)
{
	req = this._newRequest();
	req.open("GET", url,true);
	var filename="/navi_"+section+".html";
	//alert(filename);
	req.onreadystatechange = function ()
	{
		if(req.readyState == 4)
		{ 
			output = req.responseText;
			document.getElementById(el).innerHTML = output;
			pageTracker._trackPageview(filename);
		}
	}
	req.send(null);
}

function callValue(tab,page)
{
	var url = "/news/case_studies/getIndexTabData.html?page="+page+"&tab="+tab;
	xhrhnd.getText(url, 'hometabs-container',"index_case_studies");
}