function openPopup(url, breite, hoehe, links, oben) {
	if (openPopup.arguments.length < 5) {
		links = (screen.width/2)-(breite/2);
		oben = (screen.height/2)-(hoehe/2);
	}
	if (typeof popup != "undefined") {
		popup.close();
	}
	popup = window.open(url,"popup","width="+breite+", height="+hoehe+", status = no,toolbar = no,menubar = no,location = no,resizable = no,titlebar = no,scrollbars = no,fullscreen = no,top ="+oben+",left ="+links);
	popup.focus();
}

function openImage(url, breite, hoehe) {
	if (typeof popup != "undefined") {
		popup.close();
	}
	popup = window.open("imgpopup.php?img="+url,"imgpopup","width="+breite+", height="+hoehe+",top =100,left =100, status = no,toolbar = no,menubar = no,location = no,resizable = no,titlebar = no,scrollbars = no,fullscreen = no");
	popup.focus();
}