<html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>无标题页</title> <style type="text/css">... #newPreview {...}{ filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale) } </style> </head><body> <form id="form1" runat="server"> <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 = "200px"; newPreview.style.height = "200px"; } </script> <asp:FileUpload ID="Fud_Pic" runat="server" onchange="PreviewImg(this)"/> <div id="newPreview"> </div> </form></body></html>