function GetXmlHttpObject()
{
	var xmlHttp=null;
	try
	  {
		 // Firefox, Opera 8.0+, Safari
	 	 xmlHttp=new XMLHttpRequest();
	  }
	catch (e)
	{
	  // Internet Explorer
 		try
  		{
   		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    	}
  		catch (e)
    	{
    		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    	}
  	}
  	
	return xmlHttp;
}