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
	}
} 
function launchJavascriptFromXML(responseXML) {
    var scripts = responseXML.getElementsByTagName('script');
    var js = '';    
    for(var s = 0; s < scripts.length; s++) {
        if(scripts[s].childNodes[0].nodeValue == null) continue;
           js += scripts[s].childNodes[0].nodeValue;
    }
    eval(js);
}

function launchJavascript(responseText) {
  // RegExp from prototype.sonio.net
  var ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:</script>)';
           
  var match    = new RegExp(ScriptFragment, 'img');
  var scripts  = responseText.match(match);
    if(scripts) {
        var js = '';
        for(var s = 0; s < scripts.length; s++) {
            var match = new RegExp(ScriptFragment, 'im');
            js += scripts[s].match(match)[1];
        }
        eval(js);
    }
}