var ns4 = (document.layers)? true : false;
var ie4 = (document.all)? true : false; 
var winX = 20;
var winY =20;

function openWindow(bild, name, format) 
{
  var url, laenge;
  if (format == 1)
  {
    url = "breit.html?"+bild;
    laenge = 850;
  }
  else if (format == 2)
  {
    url = "quadrat.html?"+bild;
    laenge = 383;
  }
  else
    return;
  var bildGross = window.open(url, name, "height=383,width="+laenge+",left="+winX+",top="+winY+",scrollbars=no,locationbar=no");
}

function openVideo(url, name) {
  window.open(url, name, 'width=360,height=280,left=100,top=100');
 }