function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
{
   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--;
         }
      }
   }    
}

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";
        }
    }   
}
window.attachEvent("onload", externalLinks);