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 = i-1
         }
      }
   }    
}
window.attachEvent("onload", correctPNG);

/*This function is meant to be used when you are needing
faux getElementsByName() in IE. IE seems so use the 'id'
attribute instead of 'name' when you use getElementsByName().
 
tag = This tag name that the 'name' attribute you want to 
      get is attached to. Like if you called getElementsByTagName().
      
name = The value of the 'name' attribute you want.
*/
function getElementsByName_iefix(tag, name) {
     var elem = document.getElementsByTagName(tag);
     var arr = new Array();
     for(i = 0, iarr = 0; i < elem.length; i++) {
          att = elem[i].getAttribute("name");
          if(att == name) {
               arr[iarr] = elem[i];
               iarr++;
          }
     }
     return arr;
}
 
/*This function resets the height and width of the background
to that of it's parent element's height and width. This is so that the transparent
cells work in Firefox and IE correctly.  Safari doesn't seem to need it though!
 
tbg_id = This is the value of the name attribute you named all your
         backgrounds.
*/
function transparentbg(tbg_id) {
     var bak = getElementsByName_iefix("div", tbg_id);
     for(i = 0; i < bak.length; i++) {
          bak[i].style.height = bak[i].parentNode.clientHeight + "px";
          bak[i].style.width  = bak[i].parentNode.clientWidth + "px";
     }
}