function ajaxObject(url, callbackFunction) {
var that=this; 
this.updating = false;
this.abort = function() {
  if (that.updating) {
	that.updating=false;
	that.AJAX.abort();
	that.AJAX=null;
  }
}

this.update = function(passData,postMethod) { 
if (that.updating) { return false; }
	that.AJAX = null; 
if (window.XMLHttpRequest) { 
	that.AJAX=new XMLHttpRequest(); 
} else { 
	that.AJAX=new ActiveXObject("Microsoft.XMLHTTP");
} 
if (that.AJAX==null) { 
	return false; 
} else {
	that.AJAX.onreadystatechange = function() { 
	if (that.AJAX.readyState==4) { 
		that.updating=false; 
		that.callback(that.AJAX.responseText,that.AJAX.status,that.AJAX.responseXML); 
		that.AJAX=null; 
	}
} 

that.updating = new Date(); 
 if (/post/i.test(postMethod)) {
	var uri=urlCall+'?'+that.updating.getTime();
	that.AJAX.open("POST", uri, true);
	that.AJAX.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	that.AJAX.send(passData);
} else {
	var uri=urlCall+'?'+passData+'&timestamp='+(that.updating.getTime()); 
	that.AJAX.open("GET", uri, true); 
	that.AJAX.send(null); 
} 
return true; 
} 
}
var urlCall = url; 
this.callback = callbackFunction || function () { };
}