var  xmlHttp
	function GetXmlHttpObject() {
		var objXMLHttp=null
		try {
			objXMLHttp = new ActiveXObject("Msxml2.XMLHTTP"); //later IE
		} catch (e) {
			try {
				objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP"); //earlier IE
			} catch (e) {
				objXMLHttp = null;
			}
		}
		if (objXMLHttp==null) {
			objXMLHttp=new XMLHttpRequest() //IE7, Firefox, Safari
		}
		return objXMLHttp
	}

	function GetTrackingChoiceData(choiceid, row, col)
	{	
	    xmlHttp=GetXmlHttpObject();
  
	    if (xmlHttp==null)
		    {
		    //alert ("Browser does not support HTTP Request")
		    return;
		    } 
	    var url="gettrackingchoicedata.asp?cid="+choiceid+"&c="+col+"&r="+row;
	    xmlHttp.onreadystatechange=stateChangePrice;
	    xmlHttp.open("GET",url,true);
	    xmlHttp.send(null);
	}
	function stateChangePrice() 
		{ 
			if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
			{ 
			   document.getElementById("Tracking_Choice_Data").innerHTML = xmlHttp.responseText;  
			} 
		}