遮罩层DEMO

来自:http://my.oschina.net/u/246503/blog/42330

<!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>
    <title></title>
    <style type="text/css">
        #brg
        {
            width: 100%;
            height: 100%;
            background: #333;
            position: absolute;
            top: 0;
            left: 0;
            filter: alpha(opacity=60);
            -moz-opacity: 0.6;
            opacity: 0.6;
            position: absolute;
            top: 0;
            left: 0;
            display: none;
        }
        #showdiv
        {
            width: 100%;
            height: auto;
            position: absolute;
            left: 300px;
            top: 150px;
            z-index: 330;
            display: none;
        }
        #testdiv
        {
            width: 800px;
            height: auto;
            margin: 0 0;
            border: 1px solid #4d4d4d;
            background: #f2f2f2;
        }
        #close
        {
            width: 200px;
            height: 27px;
            line-height: 27px;
            font-size: 14px;
            font-weight: bold;
            border: 1px solid #4d4d4d;
            text-align: center;
            cursor: pointer;
            margin: 0 auto;
            background: #333;
            color: #fff;
        }
    </style>

    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.0/jquery.min.js"></script>

    <script type="text/javascript">
        $(document).ready(function() {
            var bheight = document.body.clientHeight;
            $("#btnAdd").click(function() {
                $("#brg").css("display", "block");
                $("#showdiv").css("display", "block");
                $("#brg").css("height", document.body.scrollHeight);
                $("#showdiv").css("top", document.body.scrollTop + 100);
            });
            $("#close").click(function() {
                $("#brg").css("display", "none");
                $("#showdiv").css("display", "none");
            });
        });
    </script>

</head>
<body>
    <button id="btnAdd">
        button</button>
    this is the test
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    <!-- 遮罩层DEMO-->
    <div id="brg">
    </div>
    <div id="showdiv">
        <div id="close">
            关闭
        </div>
        <div id="testdiv">
            要显示的内容
        </div>
    </div>
    <!-- END遮罩层DEMO-->
</body>
</html>


 

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