<!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>仿新浪微博新消息提示的智能浮動(dòng)定位框</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<style type="text/css"> 
*{margin:0;padding:0;}
body{font:12px/1.8 Arial;color:#666;}
h1.tit-h1{font-size:38px;text-align:center;margin:30px 0 15px;color:#f60;}
.go-back{text-align:center;border-top:1px dashed #ccc;padding:10px;margin-top:20px;font-size:40px;}
.wrap{border:1px dashed #ccc;background:#f8f8f8;padding:20px;}
.demo{height:1500px;}
.float{width:200px;padding:5px 10px;border:1px solid #ffecb0;font-size:12px;background-color:#fffee0;-moz-box-shadow:1px 1px 2px rgba(0,0,0,.2);-webkit-box-shadow:1px 1px 2px rgba(0,0,0,.2);box-shadow:1px 1px 2px rgba(0,0,0,.2);position:absolute;-moz-border-radius:5px;-webkit-border-radius:5px;border-radius:5px;}
.float .close-ico{position:absolute;top:5px;right:5px;display:block;width:16px;height:16px;}
/* Head Fixed */
.fixed-top{position:fixed;bottom:auto;top:0px;}
/* Foot Fixed */
.fixed-bottom{position:fixed;bottom:0px;top:auto;}
/* Left Fixed */
.fixed-left{position:fixed;right:auto;left:0px;}
/* RIGHT Fixed */
.fixed-right{position:fixed;right:0px;left:auto;}
* html,* html body{background-attachment:fixed;}
/* IE6 Head Fixed */
* html .fixed-top{position:absolute;bottom:auto;top:expression(eval(document.documentElement.scrollTop));}
/* IE6 RIGHT Fixed */
* html .fixed-right{position:absolute;right:auto;left:expression(eval(document.documentElement.scrollLeft+document.documentElement.clientWidth-this.offsetWidth)-(parseInt(this.currentStyle.marginLeft,10)||0)-(parseInt(this.currentStyle.marginRight,10)||0));}
/* IE6 Foot Fixed */
* html .fixed-bottom{position:absolute;bottom:auto;top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0)));}
/* IE6 Left Fixed */
* html .fixed-left{position:absolute;right:auto;left:expression(eval(document.documentElement.scrollLeft));}
</style> 
<script type="text/javascript" src="jquery-1.6.2.min.js"></script>
<script type="text/javascript">
/**
 * @author：愚人碼頭
 * 類似于新浪微博新消息提示的定位框
 */
(function($){
 $.fn.capacityFixed = function(options) {
 var opts = $.extend({},$.fn.capacityFixed.deflunt,options);
 var FixedFun = function(element) {
  var top = opts.top;
  var right = ($(window).width()-opts.pageWidth)/2+opts.right;
  element.css({
  "right":right,
  "top":top
  });
  $(window).resize(function(){
  var right = ($(window).width()-opts.pageWidth)/2+opts.right;
  element.css({
   "right":right
  });
  });
  $(window).scroll(function() {
  var scrolls = $(this).scrollTop();
  if (scrolls > top) {
   if (window.XMLHttpRequest) {
   element.css({
    position: "fixed",
    top: 0
   });
   } else {
   element.css({
    top: scrolls
   });
   }
  }else {
   element.css({
   position: "absolute",
   top: top
   });
  }
  });
  element.find(".close-ico").click(function(event){
  element.remove();
  event.preventDefault();
  })
 };
 return $(this).each(function() {
  FixedFun($(this));
 });
 };
 $.fn.capacityFixed.deflunt={
right : 100,//相對(duì)于頁(yè)面寬度的右邊定位
 top:150,
 pageWidth : 960
 };
})(jQuery);
</script>
</head>
<body>
<div style="height:2000px;"></div>
<div class="wrap">
 <div class="float" id="float">
  <p>1條新私信，<a href="#">查看私信</a></p>
  <p>108個(gè)新粉絲，<a href="#">查看粉絲</a></p>
  <a href="#" title="關(guān)閉" id="" class="close-ico">×</a>
 </div>
</div>
<script type="text/javascript">
$("#float").capacityFixed();
</script>
</body>
</html>

希望本文所述對(duì)大家的jQuery程序設(shè)計(jì)有所幫助。

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