function openMap() {
		var xs = 1000;
		var ys = 686;
		var leftPos = (screen.width - xs) / 2;
		var topPos = (screen.height - ys) / 2;
		w = window.open('karte_'+lang+'.php', '_', 'width='+xs+',height='+ys+',top='+topPos+',left='+leftPos+',location=no,status=no,menubar=no,toolbar=no,scrollbars=no,resizable=no')
		w.focus();
	}