function addOnloadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
    oldonload();
    func();
    }
  }
}

// extern link
function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}
addOnloadEvent(externalLinks)


function correctPNG() {
  var arVersion = navigator.appVersion.split("MSIE")
  var version = parseFloat(arVersion[1])

  if ((version >= 5.5) && (document.body.filters))
  {
     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
           if (img.align == "left") imgStyle = "float:left;" + imgStyle
           if (img.align == "right") imgStyle = "float:right;" + imgStyle
           if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
           var strNewHTML = "<span " + imgID + imgClass + imgTitle
           + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
           + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
           + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
           img.outerHTML = strNewHTML
           i = i-1
        }
     }
  }
}
addOnloadEvent(correctPNG)