JavaScript fix for IE 5.5 and up that enables IE to see transparent PNG's.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@3969 b35dd754-fafc-0310-a699-88a17e54d16e

JavaScript fix for IE 5.5 and up that enables IE to see transparent PNG's.
git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@3969 b35dd754-fafc-0310-a699-88a17e54d16e
fa41157b · aaron · a00cdffc · fa41157b
Commit fa41157b authored Jun 09, 2006 by aaron
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pngfix.js src/web/js/pngfix.js +38 -0

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--- a/src/web/js/pngfix.js
+++ b/src/web/js/pngfix.js
+/*
+ 
+Correctly handle PNG transparency in Win IE 5.5 & 6.
+http://homepage.ntlworld.com/bobosola. Updated 18-Jan-2006.
+
+Use in <HEAD> with DEFER keyword wrapped in conditional comments:
+<!--[if lt IE 7]>
+<script defer type="text/javascript" src="pngfix.js"></script>
+<![endif]-->
+
+*/
+
+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
+      }
+   }
+}