动画展层、关闭层并拖动_层和布局特效

具有动画效果的层展开、层关闭效果，展开后层可以拖动，层里面可以布局任何你想要的东西，用它来制作登录窗口或说明之类的内容效果很好。本段代码可以利用，只需定义CLASS为CONTENT即可。

<!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" mrc="text/html; charset=gb2312" />
<title>动画展层、关闭层的代码</title>
<style type="text/css">
body,span,div,td{font-size:12px;line-height:1.5em;color:#849BCA;}
#bodyL{
 float:left;
 width:84px;
 margin-right:2px;
}
a.od{
 width:80px;
 height:25px;
 line-height:25px;
 text-align:center;
 font-weight:bold;
 border: 2px solid #849BCA; 
 display:block;
 color:#547BC9;
 float:left;
 text-decoration:none;
 margin-top:2px;
}
a.od:link{
 background:#EEF1F8;
}
a.od:visited{
 background:#EEF1F8;
}
a.od:hover{
 background:#EEE;
}
a.od:active{
 background:#EEE;
}
#fd{ 
 width:500px;
 height:200px;
 background:#EDF1F8; 
 border: 2px solid #849BCA;
 margin-top:2px;
 margin-left:2px;
 float:left;
 overflow:hidden;
 position:absolute;
 left:0px;
 top:0px;
 cursor:move;
 float:left;
 /*filter:alpha(opacity=50);*/
 
}
.mrc{
 padding:10px;
}
</style>
</head>
<body>
<div id="bodyL">
 <a href="#" class="od" onclick = "show('fd');return false;">打开层</a>
 <a href="#" class="od" onclick = "closeed('fd');return false;">关闭层</a>
</div> 
<div id="fd" style="display:none;filter:alpha(opacity=100);opacity:1;">
 <div class="mrc">移动层<br>这个层是可以拖动的，按着鼠标试试……<br>模板无忧（<a href="/">mb5u.com</a>）提供各类网页模板、视频教程、JavaScript/CSS特效代码以及常用软件下载等，做有质量的学习型源码下载站。</div> 
</div>
 
<script type="text/javascript">
 var prox;
 var proy;
 var proxc;
 var proyc;
 function show(id){/*--打开--*/
  clearInterval(prox);
  clearInterval(proy);
  clearInterval(proxc);
  clearInterval(proyc);
  var o = document.getElementById(id);
  o.style.display = "block";
  o.style.width = "1px";
  o.style.height = "1px"; 
  prox = setInterval(function(){openx(o,500)},10);
 } 
 function openx(o,x){/*--打开x--*/
  var cx = parseInt(o.style.width);
  if(cx < x)
  {
   o.style.width = (cx + Math.ceil((x-cx)/5)) +"px";
  }
  else
  {
   clearInterval(prox);
   proy = setInterval(function(){openy(o,200)},10);
  }
 } 
 function openy(o,y){/*--打开y--*/ 
  var cy = parseInt(o.style.height);
  if(cy < y)
  {
   o.style.height = (cy + Math.ceil((y-cy)/5)) +"px";
  }
  else
  {
   clearInterval(proy);   
  }
 } 
 function closeed(id){/*--关闭--*/
  clearInterval(prox);
  clearInterval(proy);
  clearInterval(proxc);
  clearInterval(proyc);  
  var o = document.getElementById(id);
  if(o.style.display == "block")
  {
   proyc = setInterval(function(){closey(o)},10);   
  }  
 } 
 function closey(o){/*--打开y--*/ 
  var cy = parseInt(o.style.height);
  if(cy > 0)
  {
   o.style.height = (cy - Math.ceil(cy/5)) +"px";
  }
  else
  {
   clearInterval(proyc);    
   proxc = setInterval(function(){closex(o)},10);
  }
 } 
 function closex(o){/*--打开x--*/
  var cx = parseInt(o.style.width);
  if(cx > 0)
  {
   o.style.width = (cx - Math.ceil(cx/5)) +"px";
  }
  else
  {
   clearInterval(proxc);
   o.style.display = "none";
  }
 } 
 
 
 /*鼠标拖动*/ 
 var od = document.getElementById("fd"); 
 var dx,dy,mx,my,mouseD;
 var odrag;
 var isIE = document.all ? true : false;
 document.onmousedown = function(e){
  var e = e ? e : event;
  if(e.button == (document.all ? 1 : 0))
  {
   mouseD = true;   
  }
 }
 document.onmouseup = function(){
  mouseD = false;
  odrag = "";
  if(isIE)
  {
   od.releaseCapture();
   od.filters.alpha.opacity = 100;
  }
  else
  {
   window.releaseEvents(od.MOUSEMOVE);
   od.style.opacity = 1;
  }  
 }
 od.onmousedown = function(e){
  odrag = this;
  var e = e ? e : event;
  if(e.button == (document.all ? 1 : 0))
  {
   mx = e.clientX;
   my = e.clientY;
   od.style.left = od.offsetLeft + "px";
   od.style.top = od.offsetTop + "px";
   if(isIE)
   {
    od.setCapture();    
    od.filters.alpha.opacity = 50;
   }
   else
   {
    window.captureEvents(Event.MOUSEMOVE);
    od.style.opacity = 0.5;
   }
   
  } 
 }
 document.onmousemove = function(e){
  var e = e ? e : event;

if(mouseD==true  &&  odrag)
  {  
   var mrx = e.clientX - mx;
   var mry = e.clientY - my; 
   od.style.left = parseInt(od.style.left) +mrx + "px";
   od.style.top = parseInt(od.style.top) + mry + "px";   
   mx = e.clientX;
   my = e.clientY;
   
  }
 }
</script>
</body>
</html>

所属频道：层和布局特效/更新时间：2012-12-03

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