function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() { if (document.images && (preloadFlag == true)) { for (var i=0; i<changeImages.arguments.length; i+=2) { document[changeImages.arguments[i]].src = changeImages.arguments[i+1]; } } }

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		index_04_over = newImage("Bilder/index_04-over.png");
		index_05_over = newImage("Bilder/index_05-over.png");
		index_06_over = newImage("Bilder/index_06-over.png");
		index_07_over = newImage("Bilder/index_07-over.png");
		index_08_over = newImage("Bilder/index_08-over.png");
		index_09_over = newImage("Bilder/index_09-over.png");
		index_11_over = newImage("Bilder/index_11-over.png");
		index_12_over = newImage("Bilder/index_12-over.png");
		preloadFlag = true;
	}
}

function openWin(URL,winName,features) { window.open(URL,winName,features); }

function weiter(URL) { location.href = URL; }

function showAlbum(ebene,file) {
	if (document.getElementById(ebene).style.visibility == "hidden") {
      bild = new Image();
      bild.src = file;
      document.getElementById('shownpic').src = bild.src;
	    document.getElementById(ebene).style.visibility = "visible";
	}
	else {
	    document.getElementById(ebene).style.visibility = "hidden";
      bild2 = new Image();
      bild2.src = "images/spacer.gif";
      document.getElementById('shownpic').src = bild2.src;
	}
}