// JavaScript Document
var xmlHttp
function GetXmlHttpObject(handler)
{ 
	var objXmlHttp = null
	
	if (navigator.userAgent.indexOf("Opera") >= 0)
	{
		alert("This example doesn't work in Opera") 
		return 
	}
	
	if (navigator.userAgent.indexOf("MSIE") >= 0)
	{ 
		var strName = "Msxml2.XMLHTTP"
		if (navigator.appVersion.indexOf("MSIE 5.5") >= 0)
		{
			strName = "Microsoft.XMLHTTP"
		} 
		try
		{
			objXmlHttp = new ActiveXObject(strName)
			objXmlHttp.onreadystatechange = handler 
			return objXmlHttp
		} 
		catch(e)
		{ 
			alert("Error. Scripting for ActiveX might be disabled") 
			return 
		} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
		objXmlHttp = new XMLHttpRequest()
		objXmlHttp.onload = handler
		objXmlHttp.onerror = handler 
		return objXmlHttp
	}
}