/**
 * Fix png transparency in Internet explorer 5.5 & 6.
 * 
 * Use in <HEAD> with DEFER keyword wrapped in conditional comments:
 * <!--[if lt IE 7]>
 * <script defer type="text/javascript" src="/javascripts/pngfix.js"></script>
 * <![endif]-->
 * 
 * Adapted from http://homepage.ntlworld.com/bobosola.
 */
var arVersion = navigator.appVersion.split("MSIE");
var version = parseFloat(arVersion[1]);

if ((version >= 5.5) && (document.body.filters)) {	
	var i;
	var length = document.images.length;
	for(i = 0; i < length; i++) {
		var img = document.images[i];
		var re = /\w+\.[Pp][Nn][Gg]\w*/;
		if (img && re.exec(img.src)) {
			var imgTitle = img.title ? "title='" + img.title + "' " : "title='" + img.alt + "' ";
			imgStyle = img.parentElement.href ? "cursor:pointer;" : "";
			imgStyle += "width:" + img.width + "px; height:" + img.height + "px;";
			imgStyle += "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader (src=\'" + img.src + "\', sizingMethod='scale');";
		
			var strNewHTML = "<span " + imgTitle + " style=\"display:inline-block; " + imgStyle + " \"></span>";

			img.outerHTML = strNewHTML;
			i = i - 1;
		}
	}
}
