div浮层,滚动条移动,位置保持不变的4种方法汇总

  div在顶部不变、滚动条滚动,div还是在顶部!直接上传源码了:

  方法一:

  

复制代码 代码如下:

  <!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>div浮层,滚动条移动,保持位置不变</title>

  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

  <style type="text/css">

  body{background-image:url(about:blank);background-attachment:fixed;}

  #float{width:344px;height:34px;border:1px solid #C0DBF8;position:absolute;top:0px;}

  </style>

  </head>

  <body>

  <div id="float" >ddd</div>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  </body>

  <script type="text/javascript">

  var IO=document.getElementById('float'),Y=IO,H=0,IE6;

  IE6=window.ActiveXObject&&!window.XMLHttpRequest;

  while(Y){H+=Y.offsetTop;Y=Y.offsetParent};

  if(IE6)

  IO.style.cssText="position:absolute;top:(this.fix?(document.documentElement.scrollTop-(this.javascript||"+H+")):0)";

  window.onscroll=function (){

  var d=document,s=Math.max(d.documentElement.scrollTop,document.body.scrollTop);

  if(s>H&&IO.fix||s<=H&&!IO.fix)return;

  if(!IE6)IO.style.position=IO.fix?"":"fixed";

  IO.fix=!IO.fix;

  };

  try{document.execCommand("BackgroundImageCache",false,true)}catch(e){};

  </script>

  </html>

  方法二:

  

复制代码 代码如下:

  <STRONG><body topmargin="0" bottommargin="0" leftmargin="0" rightmargin="0" style="overflow: hidden;">

  <!-- div</STRONG>来实现<STRONG> -->

  <div style="width: 100%; height: 100%; overflow: scroll;">

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  </div>

  <div style="border: 1px red solid; width: 300px; height: 300px;margin:-150px 0 0 -150px; position: absolute; left: 50%; top: 50%;"></STRONG>

  居中的层

  <STRONG> </div>

  </body></STRONG>

  方法三:

  

复制代码 代码如下:

  <body topmargin="0" bottommargin="0" leftmargin="0" rightmargin="0" style="overflow: hidden;">

  <!-- iframe来实现  -->

  <iframe src="http://www.glzy8.com" width="100%" height="100%" frameborder="0"></iframe>

  <div style="border: 1px red solid; width: 300px; height: 300px;margin:-150px 0 0 -150px; position: absolute; left: 50%; top: 50%;">

  居中的层

  </div>

  </body>

  方法四:[采用css来居中]

  

复制代码 代码如下:

  <style type="text/css">

  <!--

  html,body {height:100%; margin:0px; font-size:12px;}

  .mydiv {

  background-color: #f9fff6;

  border: 1px solid #009900;

  text-align: center;

  line-height: 25px;

  font-size: 13px;

  font-weight: bold;

  z-index:99;

  width: 300px;

  height: 50px;

  left:50%;/*FF IE7*/

  top:50%;/*FF IE7*/

  margin-left:-150px!important;/*FF IE7 half of its width */

  margin-top:-60px!important;/*FF IE7 half of its height*/

  margin-top:0px;

  position:fixed!important;/*FF IE7*/

  position:absolute;/*IE6*/

  _top:       expression(eval(document.compatMode &&

  document.compatMode=='CSS1Compat') ?

  documentElement.scrollTop + (document.documentElement.clientHeight-this.offsetHeight)/2 :/*IE6*/

  document.body.scrollTop + (document.body.clientHeight - this.clientHeight)/2);/*IE5 IE5.5*/

  }

  -->

  </style>

  <script language="javascript" type="text/javascript">

  function showDiv(){

  document.getElementById('popDiv').style.display='block';

  }

  window.onload=function(){

  showDiv();

  }

  </script>

  <!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>始终在中间DIV (支持IE FF)</title>

  </head>

  <body>

  <div id="popDiv" class="mydiv" style="display:none;">始终在中间<br/>

  </div>

  <br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

  </body>

  </html>