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.setRequestHeader("Content-Length", passData.length);

        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 () { };

}