function AjaxCall(callPage, qstring, setDivID, aCallBack,closeMe){
	var xmlHttp;
	xmlHttp=GetXmlHttpObject();

	if (xmlHttp==null){
		alert ("Your browser does not support AJAX!");
		return;
	} 
  	// prep calling page with sid to prevent caching
	callPage=callPage+"?sid="+Math.random();
	// open call to posting page
	xmlHttp.open("POST",callPage,true);
	
	// attach callback function to xmlhttprequest object 
	xmlHttp.onreadystatechange=function(){ 
		if (xmlHttp.readyState==4){
			// set container div with contents
			if(setDivID){
				setThis = document.getElementById(setDivID);
				setReturn = xmlHttp.responseText;
				setThis.innerHTML = setReturn.replace(/^\s*|\s*$/g,'');
				if(closeMe==1){
					setThis.innerHTML = "<a href='javascript:closeGrey(0);' style='float:right;font-family:Arial;font-weight:normal;font-size:11px;color:#333399;'>[ X ] Close</a>" + setThis.innerHTML;
				}
			}
			// user defined call back on success
			if(aCallBack){
				eval(aCallBack);
			}
		}
	}
	
	if(qstring.indexOf("=")==-1&&qstring!=''){
		
		// qstring is a form - no equal sign for variables, parse it into a URL string of variables
		var frm = document[qstring];
		frmL = frm.elements.length;
		frmE = frm.elements;
		postFile = "";
		for(i=0;i<frmL;i++){
			
			if(frmE[i].options){
				allVals = "";
				for(z=0;z<frmE[i].options.length;z++){
					if(frmE[i].options[z].selected&&frmE[i].options[z].value!=''){
						allVals = allVals + frmE[i].options[z].value + ',';
					}
				}
				if(allVals.charAt(allVals.length-1)==','){
					allVals = allVals.substring(0, allVals.length - 1);
				}
				postFile = postFile + "&" + frmE[i].name + "=" + escape(allVals);
			}
			else{
				if(frmE[i].type=="radio"||frmE[i].type=="checkbox"){
				//alert("radio!");
					if(frmE[i].checked==true){
						postFile = postFile + "&" + frmE[i].name + "=" + escape(frmE[i].value);
					}
				}
				else{
					postFile = postFile + "&" + frmE[i].name + "=" + escape(frmE[i].value);
				}
			}
		
		}
		qstring = postFile;
	}
	// replace difficult characters here:
	//****************************
	// 1. Need to replace %A0 with fully encoded &nbsp; - JavaScript URL is NOT being decoded properly on backend.
	qstring = qstring.replace(/%A0/g, "%26nbsp%3B");  // double (and more) spaces
	
	qstring = "&" + qstring;
	xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	xmlHttp.send(qstring);
	
}


function GetXmlHttpObject(){
	var xmlHttp=null;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e){
 		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e){
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}