// basierend auf http://www.web-toolbox.net (Danke!)
function FotoFenster(bildurl,b,h) {
	var eigenschaften,sbreite,shoehe,fenster,b,h;
	var ns6 = (!document.all && document.getElementById);
	var ie4 = (document.all);
	var ns4 = (document.layers);

	if(ns6||ns4) {sbreite = innerWidth;shoehe = innerHeight;} else if (ie4){sbreite = document.body.clientWidth;shoehe = document.body.clientHeight;}
	x = (sbreite-b)/2; y = (shoehe-h)/2;

	eigenschaften="left="+x+",top="+y+",screenX="+x+",screenY="+y+",width="+b+",height="+h+",menubar=no,toolbar=no,statusbar=0";
	fenster=window.open("","",eigenschaften);fenster.focus();fenster.document.open();
	with (fenster) {
	  document.write("<html><head>");
	  document.write('<script type="text/javascript" language="JavaScript">');
	  document.write("function click() { window.close(); } ");
	  document.write("document.onmousedown=click ");
	  document.write('</script>');
	  document.write("<title>Klicke, um das Fenster zu schließen. Ugh.</title></head>");
	  document.write("<body onclick='window.close()' marginwidth='0' marginheight='0' leftmargin='0' topmargin='0'>");
	  document.write("<center><img src='"+ bildurl +"' border='0'></center></body></html>");
	  fenster.document.close();
	}
}