function BmAjaxObject()
{
 this.ajaxObj = this.getXmlHttpObject();
}

BmAjaxObject.prototype.getXmlHttpObject = function()
{
 var _ajaxObj;
 try
 {
  _ajaxObj = new ActiveXObject("Msxml2.XMLHTTP");
 }
 catch(e1)
 {
  try
  {
   _ajaxObj = new ActiveXObject("Microsoft.XMLHTTP");
  }
  catch(e2)
  {
   _ajaxObj = false;
  }
 }
 if(!_ajaxObj && typeof(XMLHttpRequest) != 'undefined')
 {
  _ajaxObj = new XMLHttpRequest();
 }
 return _ajaxObj;
}

BmAjaxObject.prototype.doCallBack = function(url)
{
 if(this.ajaxObj)
 {
  this.ajaxObj.open('GET', url);
  var othis = this;
  this.ajaxObj.onreadystatechange = function() {othis.readyStateChange()};
  this.ajaxObj.send(null);
 }
}

BmAjaxObject.prototype.abortCallBack = function()
{
 if(this.ajaxObj)
 {
  this.ajaxObj.abort();
 }
}

BmAjaxObject.prototype.readyStateChange = function()
{
 if(this.ajaxObj.readyState == 1)
 {
  this.onLoading();
 }
 else if(this.ajaxObj.readyState == 2)
 {
  this.onLoaded();
 }
 else if(this.ajaxObj.readyState == 3)
 {
  this.onInteractive();
 }
 else if(this.ajaxObj.readyState == 4)
 {
  if(this.ajaxObj.status == 0)
  {
   this.onAbort();
  }
  else if(this.ajaxObj.status == 200)
  {
   this.onComplete(this.ajaxObj.responseText, this.ajaxObj.responseXML);
  }
  else
  {
   this.onError(this.ajaxObj.status, this.ajaxObj.statusText, this.ajaxObj.responseText);
  }
 }
}

BmAjaxObject.prototype.onLoading = function() {}

BmAjaxObject.prototype.onLoaded = function() {}

BmAjaxObject.prototype.onInteractive = function() {}

BmAjaxObject.prototype.onComplete = function(responseText, responseXml) {}

BmAjaxObject.prototype.onError = function(status, statusText, responseText) {}

BmAjaxObject.prototype.onAbort = function() {}