// Super, check if the visitor is using MSIE < 7
var isExp = (navigator.userAgent.indexOf("MSIE") != -1 && 
navigator.userAgent.indexOf("Opera") == -1);

var isnotIE7 = false;
// if so, let's check if he's not using 7, 'cause 7 has png support (it's about time)
if(isExp)
{
	var version = navigator.userAgent.split("MSIE ")[1];
	version = version.split(";")[0];
	version = parseInt(version);
	isnotIE7 = (version < 7);
}

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 + "\');\"></span>" 
            img.outerHTML = strNewHTML
            i = i-1
         }
      }
   }    
}

if (isExp && isnotIE7) window.attachEvent("onload", correctPNG);

// the magic function that makes png's transparent in MSIE
function png_transparent(id, pic){
	// so, if he's using MSIE < version 7 then...
	if (isExp && isnotIE7){
		// apply some ugly microsoft filters, brrrr
		document.getElementById(id).style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src = '" + pic + "', sizingMethod = 'scale')";
		document.getElementById(id).style.backgroundImage = "url('transparent.gif')";
	}
}