/* Ajax-Request für Arrangements (Kompositionen) */
var http_request = false;
		function ajax_req(url) {
			http_request = false;

        if (window.XMLHttpRequest) { // Mozilla, Safari,...
            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
                // zu dieser Zeile siehe weiter unten
            }
        } 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('Ende :( Kann keine XMLHTTP-Instanz erzeugen');
            return false;
        }
        http_request.onreadystatechange = setData;
        http_request.open('GET', "texte/"+url+".html", true);
        http_request.send(null);

		}
		
		function setData() {
			if (http_request.readyState == 4) {
    		if (http_request.status == 200) {
    				document.getElementById('center_text2').innerHTML = http_request.responseText;
					} else {
				}
			} else {
			}
		}

/* Rollover-Effekt */
function swapImage(elem, bild, textbild) {
	document.getElementById('navitext').src = textbild+".jpg";
	document.getElementById('navitext').style.left = document.getElementById(elem).offsetLeft+"px";
}

/* Neues Fenster fürs Impressum */
function infopage(URL, title, weite, hoehe) {
	var startHorizontal = (screen.availWidth - weite) / 2
	var startVertikal = (screen.availHeight - hoehe) / 2
	var win = window.open(URL, title, "width="+weite+", height="+hoehe+",left="+startHorizontal+", top="+startVertikal+",scrollbars=yes");
	win.setVisible = true;
}

/* forward, wird noch ersetzt */
function forward() {
	window.location.replace("_content/start.html");
}

/* Preload von Bildern */
function imagePreload() {
preloadImages(
"service.jpg",
"uebermich.jpg",
"transkription.jpg",
"musikverlag.jpg",
"arrangements.jpg",
"kompositionen.jpg")
}

function preloadImages() {
  var d=document;
  if(d.images) {
  	 if(!d.MM_p)
  	 d.MM_p=new Array();
     var i,j=d.MM_p.length,a=preloadImages.arguments;
     for(i=0; i<a.length;i++)
     if (a[i].indexOf("#")!=0) {
     	 d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];
     	 }
   }
}

/* Tell-a-friend */
function open_taf(tid){
wm_url='http://www.webmart.de/t.cfm?id='+tid;
wm_more='width=540,height=580,scrollbars=yes,menubar=no,toolbar=no';
taf=window.open(wm_url,'taf',wm_more);
}