function popup(url) {
  window.open(url,'Afbeelding','status=no,scrollbars=no,menubar=no');
}

function correctPNG() // correctly handle PNG transparency in Win IE 5.5 or higher.
{
  for(var i=0; i<document.images.length; i++)
  {
    var img = document.images[i]
    var imgName = img.src.toUpperCase()
    if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
    {
      var imgID = (img.id) ? "id='" + img.id + "' " : ""
      var imgClass = (img.className) ? "class='" + img.className + "' " : ""
      var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
      var imgStyle = "display:inline-block;" + img.style.cssText
      var imgAttribs = img.attributes;
      for (var j=0; j<imgAttribs.length; j++)
      {
        var imgAttrib = imgAttribs[j];
        if (imgAttrib.nodeName == "align")
        {
          if (imgAttrib.nodeValue == "left") imgStyle = "float:left;" + imgStyle
          if (imgAttrib.nodeValue == "right") imgStyle = "float:right;" + imgStyle
            break
          }
        }
        var strNewHTML = "<span " + imgID + imgClass + imgTitle
        strNewHTML += " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
        strNewHTML += "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
        strNewHTML += "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
        img.outerHTML = strNewHTML
        i = i-1
     }
   }
}
        
window.attachEvent("onload", correctPNG);