function MM_preloadImages() {
	var d = document;
	if(d.images) {
		if(!d.MM_p) d.MM_p = new Array();
		var i, j = d.MM_p.length, a = MM_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];
		}
	}
}
function toggle(obj) {
	var el = document.getElementById(obj);
	el.style.display = (el.style.display != 'none' ? 'none' : '' );
}
function toggle2(id) {
	if (document.getElementById("catdiv_"+id).style.display == "none") {
		document.getElementById("catimg_"+id).src = "img/button_auf.jpg";
		document.getElementById("catdiv_"+id).style.display = "block";
	}
	else {
		document.getElementById("catimg_"+id).src = "img/button_zu.jpg";
		document.getElementById("catdiv_"+id).style.display = "none";
	}
}
function oeffnefenster (url) {
	fenster = window.open(url, "fenster1", "width=500,height=500,status=no,scrollbars=no,resizable=no");
	fenster.focus();
}