<head runat="server">
<title>jQuery彈出層</title>
<script type="text/javascript" src="js/jquery-1.3.2-min.js"></script>
<script type="text/javascript">
 $(function() {
  $("#btnShow").click(function() {
  // var str = "我是彈出對話框";
  // $(".form").html(str);
  $("#BgDiv").css({ display: "block", height: $(document).height()});
  var yscroll = document.documentElement.scrollTop;
  $("#DialogDiv").css("top", "100px");
  $("#DialogDiv").css("display", "block");
  document.documentElement.scrollTop = 0;
  });
  $("#btnClose").click(function() {
  $("#BgDiv").css("display", "none");
  $("#DialogDiv").css("display", "none");
  });
 });
</script>
<style type="text/css">
 body, h2
 {
  margin: 0;
  padding: 0;
 }
 #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;
 }
 </style>
</head>
<body>
 <form id="form1" runat="server">
 <div id="BgDiv"></div>
 <div id="DialogDiv" style="display: none">
 <h2>
  彈出層<a href="#" id="btnClose">關閉</a></h2>
 <div class="form">
  我是彈出對話框!!<br />
  我是彈出對話框!!<br />
  我是彈出對話框!!<br />
  我是彈出對話框!!<br />
  我是彈出對話框!!<br />
  我是彈出對話框!!<br />
  我是彈出對話框!!<br />
 </div>
 </div>
 <p>
 &nbsp;</p>
 <p align="center">
 <input value="彈出" class="but" type="button" id="btnShow" />
 </p>
 </form>
</body>
</html>

希望本文所述對大家的jQuery程序設計有所幫助。

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