IE6 PNG不透明问题 （只解决img标签的图片）

<script type='text/javascript' src="/script/ie6.pngfix.js"></script>
 
会让一些position的图片位置错乱

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: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;
i = i-1;
}
}
}

var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
reIE.test(navigator.userAgent);
var fIEVersion = parseFloat(RegExp["$1"]);
if(fIEVersion<7){
window.attachEvent("onload", correctPNG);
}

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只解决ie6中 background url的不透明问题

<script src="iepng.js" type="text/javascript"></script>

<script type="text/javascript">
   EvPNG.fix('div,ul,img,li,input,span,b,h1,h2,h3,h4,a');
</script>