1、首先是JSP文件 index.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<link href="global.css" rel="stylesheet" type="text/css" />
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<script type="text/javascript" src="jquery-1.4.2.js"></script>
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</head>
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<script type="text/javascript">
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//显示加载效果
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function showPopDiv(){
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$("#loading").css("display","block");
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$("#popDiv").css("display","block");
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}
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//取消加载效果
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function hiddenPopDiv(){
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$("#loading").css("display","none");
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$("#popDiv").css("display","none");
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}
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</script>
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<body>
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<input type="button" value="显示加载" onclick="showPopDiv();"/>
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<div id="popDiv"></div>
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<div id="loading"></div>
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<input type="button" value="取消加载" onclick="hiddenPopDiv();"/>
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</body>
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</html>
2、css文件 global.css
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#loading{
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position:fixed;_position:absolute;
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display: none;
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top:50%;left:50%;
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width:124px;height:124px;
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overflow:hidden;
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background:url(loaderc.gif) no-repeat;z-index:7;
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margin:-62px 0 0 -62px;
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}
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#popDiv{
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margin-top:50px;
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display: none;
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position: absolute;
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top: 0%;
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left: 0%;
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width: 100%; height: 100%;
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background-color: black;
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z-index:2; -moz-opacity: 0.7;
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opacity:.70;
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filter: alpha(opacity=5);
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}
3、加载效果图片 loaderc.gif
4、在index.jsp中引入 jquery-1.4.2.js
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