此段代码放于<head> ....</head>之间

<style type="text/css">#newPreview
{
FILTER: progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)
}
</style>
<body>内的代码
<script language="javascript" type="text/javascript">
function PreviewImg(imgFile)


{
var newPreview = document.getElementById("newPreview");
newPreview.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgFile.value;
newPreview.style.width = "80px";
newPreview.style.height = "60px";
}

</script>
<asp:FileUpload ID="Fud_Pic" runat="server" onchange="PreviewImg(this)" /><div id="newPreview"></div>


















