var fenster="", nr=0;
   function fensterauf(x,y,bild,titel)
 {
   fenster=window.open("", nr, "width="+(x+20)+",height="+(y+50)+"")
   fenster.document.write("<html><head><title>"+titel+"</title></head>");
   fenster.document.write("<body  bgcolor='#000000' text='#ffffff' link='#ffffff' alink='#ffffff' vlink='#ffffff'>");
   fenster.document.write("<center><img src='"+bild+"' width='"+x+"' height='"+y+"' alt='"+titel+"' onclick='self.close();'><BR>");
   fenster.document.write("<a href='javascript:window.close()'><font face='Verdana','Arial'><font size=2>Fenster schließen!</font></a></center></body></html>");
   nr++;
   }
