var firefox = navigator.userAgent.indexOf('Firefox') != -1
var explorer = navigator.userAgent.indexOf('MSIE') != -1
var explorer7 = navigator.userAgent.indexOf('MSIE 7.0') != -1
var netscape = navigator.userAgent.indexOf('Netscape') != -1
var safari = navigator.userAgent.indexOf('Safari') != -1
var opera = navigator.userAgent.indexOf('Opera') != -1
var camino = navigator.userAgent.indexOf('Camino') != -1
var macintosh = navigator.platform.indexOf('Mac') != -1

/** Parse the dom apply the PNG filter to
**  PNG images
************************************************** */

function correctPNG() {
	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: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 class=\"pngFix\" " + 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
		}
	}
}

/** If code detects IE version other than 7,
**  apply the PNG filter
************************************************** */

if (explorer && !explorer7) {
    window.attachEvent('onload', correctPNG);
}