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+(urlCall.indexOf('?')<0 ? '?' : '&')+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+(urlCall.indexOf('?')<0 ? '?' : '&')+passData+'&timestamp='+(that.updating.getTime());
        
        that.AJAX.open("GET", uri, true);
        that.AJAX.send(null);
      }
      return true;
    }
  }
  var urlCall = url;
  this.callback = callbackFunction || function () { };
}