修复IE 下PNG 图片不能透明显示的问题

<script type="text/javascript">
// 修复 IE 下 PNG 图片不能透明显示的问题
function fixPNG(myImage)
{
    var arVersion = navigator.appVersion.split("MSIE");
    var version = parseFloat(arVersion[1]);
    if ((version >= 5.5) && (version < 7) && (document.body.filters))
{
    var imgID = (myImage.id) ? "id='" + myImage.id + "' " : "";
    var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : "";
    var imgTitle = (myImage.title) ? "title='" + myImage.title  + "' " : "title='" +

myImage.alt + "' ";
    var imgStyle = "display:inline-block;" + myImage.style.cssText;
    var strNewHTML = "<span " + imgID + imgClass + imgTitle+ " style=\"" + "width:" +

myImage.width+ "px; height:" + myImage.height+ "px;" + imgStyle + ";"+

"filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"+ "(src=\'" + myImage.src + "\',

sizingMethod='scale');\"></span>";
   myImage.outerHTML = strNewHTML;
}
}
</script>