Jquery实现遮罩层的简单实例(就是弹出DIV周围都灰色不能操作)

Jquery实现遮罩层的简单实例(就是弹出DIV周围都灰色不能操作)
<!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=gb2312" />
 <title>Jquery遮罩层</title>
 
 <style type="text/css">   
   #BgDiv{background-color:#e3e3e3; position:absolute; z-index:99; left:0; top:0; display:none; width:100%; height:1000px;opacity:0.5;filter: alpha(opacity=50);-moz-opacity: 0.5;}
   
   #DialogDiv{position:absolute;width:400px; left:50%; top:50%; margin-left:-200px; height:auto; z-index:100;background-color:#fff; border:1px #8FA4F5 solid; padding:1px;}
   #DialogDiv h2{ height:25px; font-size:14px; background-color:#8FA4F5; position:relative; padding-left:10px; line-height:25px;}
   #DialogDiv h2 a{position:absolute; right:5px; font-size:12px; color:#000000}
   #DialogDiv .form{padding:10px;}
   
   #DialogDiv2{position:absolute;width:400px; left:50%; top:50%; margin-left:-200px; height:auto; z-index:100;background-color:#fff; border:1px #8FA4F5 solid; padding:1px;}
   #DialogDiv2 h2{ height:25px; font-size:14px; background-color:#8FA4F5; position:relative; padding-left:10px; line-height:25px;}
   #DialogDiv2 h2 a{position:absolute; right:5px; font-size:12px; color:#000000}
   #DialogDiv2 .form{padding:10px;}
   
   #DialogDiv3{position:absolute;width:400px; left:50%; top:50%; margin-left:-200px; height:auto; z-index:100;background-color:#fff; border:1px #8FA4F5 solid; padding:1px;}
   #DialogDiv3 h2{ height:25px; font-size:14px; background-color:#8FA4F5; position:relative; padding-left:10px; line-height:25px;}
   #DialogDiv3 h2 a{position:absolute; right:5px; font-size:12px; color:#000000}
   #DialogDiv3 .form{padding:10px;}
 </style>
 
 <script language="javascript" type="text/javascript" src="jquery-1.4.2.min.js"></script>
 <script language="javascript" type="text/javascript">
  function ShowDIV(thisObjID) {
     $("#BgDiv").css({ display: "block", height: $(document).height() });
     var yscroll = document.documentElement.scrollTop;
     $("#" + thisObjID ).css("top", "100px");
     $("#" + thisObjID ).css("display", "block");
  document.documentElement.scrollTop = 0;
   }

   function closeDiv(thisObjID) {
     $("#BgDiv").css("display", "none");
     $("#" + thisObjID).css("display", "none");
   }
 </script>
 
 </head>
 
 <body>
 <div id="BgDiv"></div>
 
 <!--遮罩层显示的DIV1-->
 <div id="DialogDiv" style="display:none">
  <h2>弹出层<a href="#" id="btnClose" onclick="closeDiv('DialogDiv')">关闭</a></h2>
  <div class="form">我是弹出对话框111111！！</div>
 </div>
 
 <!--遮罩层显示的DIV2-->
 <div id="DialogDiv2" style="display:none">
  <h2>弹出层<a href="#" id="btnClose2" onclick="closeDiv('DialogDiv2')">关闭</a></h2>
  <div class="form">我是弹出对话框2222！！</div>
 </div>
 
 <!--遮罩层显示的DIV3-->
 <div id="DialogDiv3" style="display:none">
  <h2>弹出层<a href="#" id="btnClose3" onclick="closeDiv('DialogDiv3')">关闭</a></h2>
  <div class="form">我是弹出对话框3333333！！</div>
 </div>
Jquery实现遮罩层的简单实例(就是弹出DIV周围都灰色不能操作)

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