function popup(p_url,p_width,p_height) {
	var w=(p_width) ? p_width : 640;
	var h=(p_height) ? p_height : 480;
	var p=",left=200,top=100,resizable=yes,scrollbars=auto";
	pw = window.open("img/themenbilder-zoom/"+p_url+".html","nikolaus","width="+w+",height="+h+p);
	pw.focus();
	return false;
}
try {
	document.execCommand('BackgroundImageCache', false, true);
} catch(e) {}