//HTTP-Request für Skillcalculator v1.0

var http_request = false;

function request(tree){

	if (window.XMLHttpRequest) { // FF
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
		}
	} 
	else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
	    } 
		catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			catch (e) {}
		}
	}

	if (!http_request) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
		return false;
	}
	var file = tree+".xml";
	http_request.open('GET', file, true);
	http_request.send(null);

}