Ajax

var createxmlHttpReq = function(){
	var xmlHttpReq;
	try{
		xmlHttpReq = new ActiveXObject("Msxml2.XMLHTTP");
	}catch(e){
		try{
			 xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
		}catch(e){
			
		}
	}
	return xmlHttpReq;
}