   function show_popbild(bild,vWidth,vHeight,vDoScroll,titel,under) { 
    /* K. Walter: 8.2006
       Pop-Up Fenster mit Größe vwidth * vHeight öffnen und darin das in bild angegebene
       bild anzeigen. titel wird erwartet, wenn under = " ", erfolgt keine Unterschrift.
       vDoScroll=0 fixes Fenster, vDoScroll=1 scrollbares Fenster. 
       Stößt das Pop-Up Fenster aufgrund von vWidth oder vHeight an die Screen-Grenzen
       an, so erfolgt Begrenzung und vDoScroll wird 1 gesetzt */
    var day=new Date(); var id=day.getTime();
    var ptop=screen.height-vHeight-90; var pleft=screen.width-vWidth-40;
    var roll=vDoScroll;breit=vWidth; hoch=vHeight;
    if(ptop  < 0) {ptop=20;hoch=screen.height-80;roll=1};
    if(pleft < 0) {pleft=20;breit=screen.Width-40; roll=1};
      var page;
      var nameold=window.name;  
     eval("page=window.open(\"about:blank\",'"+id+"','toolbar=0,scrollbars="+roll+
    ",location=0,statusbar=0,menubar=0,resizable=0,width="+breit+",height="+hoch+",left="+
    pleft+",top="+ptop+"');");  

    page.document.write(" <head> <style type='text/css'>");  
    page.document.write(" BODY {background:#e0e0e0; color:#383838; margin:0px; font-family:Times,Arial,Verdana; font-size:13pt;} ");
    page.document.write(" TD { font-family:Times,Arial,Verdana; font-size:13pt;} </style>");
    page.document.write(" <title>"+titel+"</title>");
    page.document.write(" </head>");


    page.document.write(" <body> "); 
    page.document.write(" <table width='100%' border='0' cellspacing='10'> <tr width='100%'> <br> ");
    page.document.write("  <td align='left' width='3%' valign='top'>&nbsp;</td> ");
    page.document.write("  <td align='left' width='90%' valign='top'> ");
    page.document.write("  <span style='font-size:15pt;font-weight:bold'>"+titel+"</span></td> ");
    page.document.write("  <td align='left' width='7%' valign='top'> ");
    page.document.write("  <a href='#'><img src='images/ico_links.gif' align='left' "); 
    page.document.write("  style='border:none; width:16px; height:16px; cursor:hand' "); 
    page.document.write("  onclick='self.close();' alt='Return' title='Return' ></a> ");
    page.document.write("  </td></tr></table> ");   
    page.document.write("  <br> ");
  
    page.document.write("  <table width='100%' border='0' cellspacing='10'> ");
    page.document.write("  <tr><td width='100%' align='center' valign='top'>  "); 
    page.document.write("  <img src='images/"+bild+"' border='0'><br/><br/> ");
    if(under != " ") {
    page.document.write("  <b>"+under+"</b> ");
                     }                                  
    page.document.write("   </td> </tr> </table> ");
    page.document.write("   <br/> ");

    page.document.write(" </body> ");
    page.document.write(" </html> ");
    page.document.write("  ");  
    return page;
    }
