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");
    	}
  	}
  	if (xmlHttp==null)
 	{
  		alert ("Your browser does not support AJAX!");
  			return false;
  	} 
  	else
  	{
  		return xmlHttp;
  	}
}