jQuery弹出窗口

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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery弹出窗口 - 计划-博客园</title>
<meta name="keywords" content="www.cnblogs.com/jihua"/>
<style type="text/css">
.window{
     width:250px;
     background-color:#d0def0;
     position:absolute;
     padding:2px;
     margin:5px;
     display:none;
     }
.content{
     height:150px;
     background-color:#FFF;
     font-size:14px;
     overflow:auto;
     }
     .title{
         padding:2px;
         color:#0CF;
         font-size:14px;
         }
.title img{
         float:right;
         }
</style>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" language="javascript">
     $(document).ready(function () {
         $("#btn_center").click(function () {
             popCenterWindow();
         });

         $("#btn_right").click(function () {
             popRightWindow();
         });
         $("#btn_left").click(function () {
             popLeftWindow();
         });

     });

</script>
</head>
<body>
  <div style="width:600px;margin-left:auto;margin-right:auto;margin-top:160px;">
<input type="button" value="居中窗口" id="btn_center" />
<input type="button" value="居左下角" id="btn_left" />
<input type="button" value="居右下角" id="btn_right" />
</div>
    <div class="window" id="center">
<div id="title" class="title"><img src="http://pic002.cnblogs.com/images/2012/451207/2012100814082487.jpg" alt="关闭" />计划博客园-居中窗口</div>
<div class="content">jihua.cnblogs.com</div>
    </div>

   <div class="window" id="left">
<div id="title2" class="title"><img src="http://pic002.cnblogs.com/images/2012/451207/2012100814082487.jpg" alt="关闭" />计划博客园-居左窗口</div>
<div class="content">jihua.cnblogs.com</div>
   </div>
   <div class="window" id="right">
<div id="title3" class="title"><img src="http://pic002.cnblogs.com/images/2012/451207/2012100814082487.jpg" alt="关闭" />计划博客园-居右窗口</div>
<div class="content">jihua.cnblogs.com</div>
   </div>
   <script type="text/javascript">
   //获取窗口的高度
var windowHeight;
//获取窗口的宽度
var windowWidth;
//获取弹窗的宽度
var popWidth;
//获取弹窗高度
var popHeight;
function init(){
    windowHeight=$(window).height();
    windowWidth=$(window).width();
    popHeight=$(".window").height();
    popWidth=$(".window").width();
}
//关闭窗口的方法
function closeWindow(){
     $(".title img").click(function(){
         $(this).parent().parent().hide("slow");
         });
     }
     //定义弹出居中窗口的方法
     function popCenterWindow(){
         init();
         //计算弹出窗口的左上角Y的偏移量
     var popY=(windowHeight-popHeight)/2;
     var popX=(windowWidth-popWidth)/2;
     //alert('jihua.cnblogs.com');
     //设定窗口的位置
     $("#center").css("top",popY).css("left",popX).slideToggle("slow");
     closeWindow();
     }
     function popLeftWindow(){
         init();
         //计算弹出窗口的左上角Y的偏移量
     var popY=windowHeight-popHeight;
     //var popX=-(windowWidth-popWidth);
     //alert(popY);
     //设定窗口的位置
     $("#left").css("top",popY-50).css("left",50).slideToggle("slow");
     closeWindow();
     }
     function popRightWindow(){
         init();
         //计算弹出窗口的左上角Y的偏移量
     var popY=windowHeight-popHeight;
     var popX=windowWidth-popWidth;
     //alert(www.cnblogs.com/jihua);
     //设定窗口的位置
     $("#right").css("top",popY-50).css("left",popX-50).slideToggle("slow");
     closeWindow();
     } </script>
</body>
</html>

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<title> 弹层无遮罩可拖动</title>

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弹层无遮罩可拖动，可缩放，代码统一，可扩展
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