var xml_feed = "http://developer.apple.com/internet/webcontent/XMLHttpRequestExample/songs.xml"; 
 
var info = document.getElementById("info-button").onclick = function(){ 
               fetchXML(); 
} 
 
 
function fetchXML(){ 
 
	req = createRequest(); 
} 
	 
function createRequest(){ 
	if(window.XMLHttpRequest) { 
		try { 
			req = new XMLHttpRequest(); 
		} catch(e) { 
			req = false; 
			alert('Anfrage fehlgeschlagen!'); 
		} 
		// branch for IE/Windows ActiveX version 
		} else if(window.ActiveXObject) { 
			try { 
				req = new ActiveXObject("Msxml2.XMLHTTP"); 
			} catch(e) { 
				try { 
					req = new ActiveXObject("Microsoft.XMLHTTP"); 
				} catch(e) { 
					req = false; 
					alert('Anfrage fehlgeschlagen!'); 
				} 
			} 
		} 
		if(req) { 
		alert(req); 
		req.open("GET", xml_feed, true); 
		alert(req); 
		req.send(""); 
		} 
}