PNG背景在不同浏览器下的应用

function correctPNG()
{
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);

filter:
progid:DXImageTransform.Microsoft.AlphaImageLoader
(src='temp.png',sizingMethod='scale')

.uicss_cn{background:transparent url(../images/temp.png) repeat-x bottom left;height:3px;position:absolute;width:100%; font-size:0px;}
*html .uicss_cn{background:transparent;
filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src="../images/temp.png", sizingMethod="crop");}