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(ns6||ns4) {
sbreite = screen.availWidth;
shoehe = screen.availHeight;
}
else if(ie4) {
sbreite = screen.availWidth;
shoehe = screen.availHeight;
}

h = Number(h) + 20;
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>');
  document.write('<link href="site.css" rel="stylesheet" type="text/css">');
  // 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 ');
  //document.write('<' + 'body onblur="window.close();" ');// bei Focusverlust schliessen
  document.write('marginwidth="0" marginheight="0" leftmargin="0" topmargin="0" bgcolor="#DCDDDF">');
  document.write('<center>');
  document.write('<img src="'+ bildurl +'"border="0">');
  document.write('</center>');
  document.write('&nbsp;<b>Optionen:</b> <a class="content" href="javascript:print()">Diese Seite drucken</a> | ');
  document.write('<a class="content" href="javascript:window.close()">Fenster schliessen</a>');
  document.write('</body></html>');
  fenster.document.close();
}
}
