jsp 文件上传浏览，支持ie6，ie7，ie8

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找了好久终于找到一个jsp上能用的…… 分享！！

<%@ page language="java" contentType="text/html; charset=UTF-8" 
    pageEncoding="UTF-8"%> 
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
    <head> 
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 
        <link rel="stylesheet" href="../css/common.css" href="css/common.css" type="text/css" /> 
        <title>管理区域</title> 
        <style type="text/css"><!-- 
#newPreview 
{ 
filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale); 
} 
--></style> 
<script type="text/javascript" language="javascript"><!-- 
var flag=true; 
function PreviewImg(imgFile) 
{ 
//新的预览代码，支持 IE6、IE7,IE8也支持，firefox不支持！！我测试了的…… 
var newPreview = document.getElementById("newPreview"); 
newPreview.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgFile.value; 
if(flag) 
{ 
newPreview.style.width = "100px"; 
newPreview.style.height = "80px"; 
} 
} 
function setImgWH() 
{ 
var newPreview = document.getElementById("newPreview"); 
flag=false; 
newPreview.style.width = document.getElementById("txtImgWidth").value;; 
newPreview.style.height = document.getElementById("txtImgHeight").value; 
} 
// --></script> 
    </head> 
    <body> 
        <div id="man_zone"> 
        <form action="product.do?command=addProduct" method="post" name="Upload" enctype="multipart/form-data"> 
                <table width="100%" border="0" align="center" cellpadding="3" 
                    cellspacing="1" class="table_style"> 

                    <tr> 
                        <td class="left_title_2"> 
                            商品图片： 
                        </td> 
                        <td><input type="file" name="file" onchange="javascript:PreviewImg(this);" style="border: 1px #FFFFFF 
solid;background:#efefef" style="border: 1px #FFFFFF 
solid;background:#efefef" /><font color=red>*</font><div id="newPreview"></div></td> 
                    </tr> 
                    <tr> 
                        <td class="left_title_1"> 
                            <input type="submit" name="Submit" value="增加" /> 
                        </td> 
                        <td> 
                            <input type="reset" name="Reset" value="重置" /> 
                        </td> 
                    </tr> 
                </table> 
            </form> 
        </div> 
    </body> 
</html>