popupnr=0;

  this.show = function(name)
   {
   if (popupnr>0) popupnr++;
   else { popupnr=1; showwin=new Array(); }
   showwin[popupnr] = document.getElementById( name );
   if ( showwin[popupnr] )
    {
    showwin[popupnr].style.filter = "Alpha(opacity=0)";
    showwin[popupnr].style.MozOpacity = 0;
    showwin[popupnr].style.opacity = 0;
    showwin[popupnr].style.display='block';
    for (i=0;i<=100;i++)
        window.setTimeout('showwin[popupnr].style.filter = "Alpha(opacity=' + i + ')"; showwin[popupnr].style.MozOpacity = ' + i/100 + '; showwin[popupnr].style.opacity = ' + i/100 + ';', i*4);
    }
   }

  this.hide = function(name)
   {
   showwin = document.getElementById( name );
   if ( showwin )
    {
    showwin.style.filter = "Alpha(opacity=100)";
    showwin.style.MozOpacity = 1;
    showwin.style.opacity = 1;
    for (i=0;i<=100;i++)
        window.setTimeout('showwin.style.filter = "Alpha(opacity=' + (100-i) + ')"; showwin.style.MozOpacity = ' + (1-(i/100)) + '; showwin.style.opacity = ' + (1-(i/100)) + ';', i*4);
    window.setTimeout('showwin.style.display="none";',400);
    }
   }

  function popup(datei)
   {
   fenster=window.open(datei, 'popup', 'fullscreen=0, width=600, height=600, top=0, left=0, toolbar=1, title=0, location=0, directories=0, statusbar=0, status=0, menubar=0, scrollbars=0, resizable=0, copyhistory=0');
   fenster.moveTo(20,20);
   }