function FotoWindow(bildurl,b,h)
{
var eigenschaften,sbreite,shoehe,fenster,b,h;

// stellt die Bildschirmabmessungen fest
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('<scr' + 'ipt type="text/javascr' + 'ipt" language="JavaScr' + 'ipt">');
  // bei click  schliessen 
  document.write("function click() { window.close(); } ");
  document.write("document.onmousedown=click ");
  document.write('</scr' + 'ipt>');
  document.write("<title>klick zum schließen</title></head>");
  document.write("<" + "body onblur='window.close()';");
  document.write("marginwidth='0' marginheight='0' leftmargin='0' topmargin='0'>");
  document.write("<center>");
  document.write("<img src='"+ escape(bildurl) +"' border='0'>");
  document.write("<center>");
  document.write("</body></html>");
  fenster.document.close();
}
}

function offnevideo (url) {
 fenster = window.open(url, "fenster1", "width=600,height=400,status=yes,scrollbars=yes,resizable=yes");
 fenster.focus();
}
