var xmlHttp=null;

function GetXmlHttpObject(handler)
{ 
	if (navigator.userAgent.indexOf("Opera")>=0)
	{
		alert("Sorry, we don't currently support Opera"); 
		return null;
	}
	
	if (navigator.userAgent.indexOf("MSIE")>=0)
	{ 
		var strName="Msxml2.XMLHTTP";
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
		{
			strName="Microsoft.XMLHTTP";
		} 
		try
		{ 
			xmlHttp=new ActiveXObject(strName);
			xmlHttp.onreadystatechange=handler ;
			return xmlHttp;
		} 
		catch(e)
		{ 
			alert("Error. Scripting for ActiveX might be disabled"); 
			return null;
		} 
	} 
	
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
		xmlHttp=new XMLHttpRequest();
		xmlHttp.onload=handler;
		xmlHttp.onerror=handler;
		return xmlHttp;
	}
}

function AjaxComplete() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
		return(true);
	else
	{
		//alert("an error occured durring ajax communication. please try again later");
		return(false);
	}	
}