function ViewImage(bildurl,b,h,bildtitel)
{
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(navigator.appName=="Netscape"){
sbreite=innerWidth;
shoehe=innerHeight;
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";
fenster=window.open("","",eigenschaften);
fenster.innerWidth=b;
fenster.innerHeight=h;
}
else{
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";
fenster=window.open("","",eigenschaften);
}
fenster.focus();
fenster.document.open();
with (fenster) {
  document.write('<html><head>');
  // geändert 2004 für Mozilla
  document.write('<scr' + 'ipt type="text/javascr' + 'ipt" language="JavaScr' + 'ipt">');
  document.write("function click() { window.close(); } ");  // bei click  schliessen
  document.write("document.onmousedown=click ");
  // geändert 2004 für Mozilla
  document.write('</scr' + 'ipt>');
  document.write('<title>'+ bildtitel +'</title></head>');
  // Zeile geändert Aug 2003 (Dreamweaver machte Probleme)
  document.write('<' + 'body onblur="window.close();" ');// bei Focusverlust schliessen
  document.write('marginwidth="0" marginheight="0" leftmargin="0" topmargin="0">');
  document.write('<center>');
  document.write('<img src="'+ bildurl +'"border="0">');
  document.write('<center>');
  document.write('</body></html>');
  fenster.document.close();
}
}