png图片(有含有透明)在IE6中为什么不透明了

png-8模式的图片，如果没有渐变的话是透明的，如果有渐变就不透明了。需要js的支持。

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 j = 0; j < document.images.length; j++) {

var img = document.images[j]

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

j = j - 1

}

window.attachEvent("onload", correctPNG);

本文转自豪情博客园博客，原文链接：http://www.cnblogs.com/jikey/archive/2010/02/05/1664587.html，如需转载请自行联系原作者