https://www.blasgwyr.co.uk/includes/utils.js

1function inputStyle(inputID)
2{
3    //  Change style
4    var inputBox
5    inputBox = document.getElementById(inputID);
6
7    if (inputBox.className == "inputOver")
8    {
9        inputBox.className = "inputOut";
10    }
11    else
12    {
13        inputBox.className = "inputOver";
14    }
15}  
16
17
18function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
19{
20   var arVersion = navigator.appVersion.split("MSIE")
21   var version = parseFloat(arVersion[1])
22   if ((version >= 5.5) && (document.body.filters)) 
23   {
24      for(var i=0; i<document.images.length; i++)
25      {
26         var img = document.images[i]
27         var imgName = img.src.toUpperCase()
28         if (imgName.substring(imgName.length-3, imgName.length) == "PNG" && imgName.indexOf("GOOGLE") < 0)
29         {
30            var imgID = (img.id) ? "id='" + img.id + "' " : ""
31            var imgClass = (img.className) ? "class='" + img.className + "' " : ""
32            var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
33            var imgStyle = "display:inline-block;" + img.style.cssText 
34            if (img.align == "left") imgStyle = "float:left;" + imgStyle
35            if (img.align == "right") imgStyle = "float:right;" + imgStyle
36            if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
37            var strNewHTML = "<span " + imgID + imgClass + imgTitle
38            + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
39            + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
40            + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
41            img.outerHTML = strNewHTML
42            i = i-1
43         }
44      }
45   }    
46}
47if (window.addEventListener) //DOM method for binding an event
48    window.addEventListener("load", correctPNG, false)
49else if (window.attachEvent) //IE exclusive method for binding an event
50    window.attachEvent("onload", correctPNG)
51else if (document.getElementById) //support older modern browsers
52    window.onload=correctPNG