function createREQ() { 
	try { 
	req = new XMLHttpRequest (); // e. g. Firefox
	} 	catch (err1) { 
			try { 
			req = new ActiveXObject("Msxm12.XMLHTTP"); // some versions IE 
			} 	catch (err2) { 
					try { 
					req = new ActiveXObject("Microsoft.XMLHTTP"); // some versions IE
					} 	catch (err3) { 
					req = false; 
					} 
			}
	} 
	return req; 
}

function requestGET(url, query, req) { 
	myRand=parseInt(Math.random()*99999999); 
	req.open("GET",url+'?'+query+'&rand='+myRand,true); 
	req.send(null); 
}

function requestPOST (url, query, req) { 
	req.open("POST",url, true); 
	req.setRequestHeader('Content-Type', 'application/"x-www-form-urlencoded'); 
	req.send(query); 
} 

function doCallback(callback,item) {
	eval (callback + '(item)'); 
}

function doAjax(url,query,callback,reqtype,getxml) {
	// create the XMLHTTPRequest object instance 
	var myreq = createREQ();
	
	myreq.onreadystatechange = function() {
		if(myreq.readyState == 4) { 
			if(myreq.status == 200) { 
				var item = myreq.responseText; 
				if(getxml==1) { 
					item = myreq.responseXML; 
				} 
				doCallback(callback, item);
			}
		}
	} 
	if(reqtype=='post') { 
		requestPOST(url,query,myreq); 
	} else { 
		requestGET(url,query,myreq); 
	} 
} 

/*
function callAHAH(url, pageElement, callMessage) {
     document.getElementById(pageElement).innerHTML = callMessage;
     try {
     req = new XMLHttpRequest(); // e.g. Firefox 
     } catch(e) {
       try {
       req = new ActiveXObject("Msxml2.XMLHTTP");  // some versions IE
       } catch (e) {
         try {
         req = new ActiveXObject("Microsoft.XMLHTTP");  // some versions IE
         } catch (E) {
          req = false;
         } 
       } 
     }
     req.onreadystatechange = function() {responseAHAH(pageElement);};
     req.open("GET",url,true);
     req.send(null);
}

function responseAHAH(pageElement) {
	var output = '';
	if(req.readyState == 4) {
		if(req.status == 200) {
			output = req.responseText;
			document.getElementById(pageElement).innerHTML = output;
		}
	}
}
*/