JQueryマスクlayer_html/css_WEB-ITnose

<style type="text/css">    .mask {              position: absolute; top: 0px; filter: alpha(opacity=60); background-color: #777;            z-index: 1002; left: 0px;            opacity:0.5; -moz-opacity:0.5;        }</style>

<script type="text/javascript">    //兼容火狐、IE8    function showMask(){        $("#mask").css("height",$(document).height());        $("#mask").css("width",$(document).width());        $("#mask").show();    }</script>

<div id="mask" class="mask"></div><a href="javascript:;" onclick="showMask()" >点我显示遮罩层</a><br />