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JavaScript横向滑出的多级菜单_菜单导航特效

查看演示效果

特效Tag：滑出菜单添加

JavaScript横向滑出的多级菜单，只用鼠标放上就可以动画出现二级菜单，整体设计精美，大气，博客上也可以用哦。

<!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>JavaScript横向滑出的多级菜单</title>
<style>
* {padding:0; margin:0}
body {font:12px Verdana, Arial, Helvetica}
#wrapper {width:750px; padding:25px; margin:0 auto}
#leftcolumn {float:left; width:225px}
#rightcolumn {float:left; width:525px}
.dropdown {display:block; position:relative}
.dropdown dt {width:188px; border:2px solid #9ac1c9; padding:8px; font-weight:bold; cursor:pointer; background:url(http://p1.mb5u.com/texiao/0/2010052223053773.gif)}
.dropdown .upperdd {border-bottom:none}
.dropdown dt:hover {background:url(http://p1.mb5u.com/texiao/0/2010052223053774.gif)}
.dropdown dd {position:absolute; top:0; overflow:hidden; width:208px; display:none; background:#fff; opacity:0}
.dropdown ul {width:204px; border:2px solid #9ac1c9; list-style:none}
.dropdown li {display:inline}
.dropdown a, .dropdown a:active, .dropdown a:visited {display:block; padding:5px; color:#333; text-decoration:none; background:#eaf0f2; width:194px}
.dropdown a:hover {background:#d9e1e4; color:#000}
.dropdown .underline {border-bottom:1px solid #b9d6dc}
</style>
<script type="text/javascript">
var DDSPEED = 10;
var DDTIMER = 15;
var OFFSET = -2;
var ZINT = 100;

function ddMenu(id,d){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddmrc');
  clearInterval(c.timer);
  if(d == 1){
    clearTimeout(h.timer);
    c.style.display = 'block';
    if(c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!c.maxh){
      c.style.left = (h.offsetWidth + OFFSET) + 'px';
      c.style.height = 'auto';
      c.maxh = c.offsetHeight;
      c.style.height = '0px';
    }
    ZINT = ZINT + 1;
    c.style.zIndex = ZINT;
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c)},50);
  }
}

function ddCollapse(c){
  c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

function cancelHide(id){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddmrc');
  clearTimeout(h.timer);
  clearInterval(c.timer);
  if(c.offsetHeight < c.maxh){
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }
}

function ddSlide(c,d){
  var currh = c.offsetHeight;
  var dist;
  if(d == 1){
    dist = Math.round((c.maxh - currh) / DDSPEED);
  }else{
    dist = Math.round(currh / DDSPEED);
  }
  if(dist <= 1 && d == 1){
    dist = 1;
  }
  c.style.height = currh + (dist * d) + 'px';
  c.style.opacity = currh / c.maxh;
  c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
  if(currh > (c.maxh - 2) && d == 1){
    clearInterval(c.timer);
  }else if(dist < 1 && d != 1){
    clearInterval(c.timer);
    c.style.display = 'none';
  }
}
</script>
</head>
<body>
<div id="wrapper">
<div id="leftcolumn">
  <dl class="dropdown">
    <dt id="one-ddheader" class="upperdd" onmouseover="ddMenu('one',1)" onmouseout="ddMenu('one',-1)">我们首页</dt>
    <dd id="one-ddmrc" onmouseover="cancelHide('one')" onmouseout="ddMenu('one',-1)">
      <ul>
        <li><a href="#" class="underline">模板无忧</a></li>
        <li><a href="#" class="underline">网页殊效</a></li>
        <li><a href="#">源码下载</a></li>
      </ul>
    </dd>
  </dl>
  <dl class="dropdown">
    <dt id="two-ddheader" class="upperdd" onmouseover="ddMenu('two',1)" onmouseout="ddMenu('two',-1)">网站导航</dt>
    <dd id="two-ddmrc" onmouseover="cancelHide('two')" onmouseout="ddMenu('two',-1)">
      <ul>
        <li><a href="#" class="underline">ASP</a></li>
        <li><a href="#" class="underline">PHP</a></li>
        <li><a href="#" class="underline">.NET</a></li>
        <li><a href="#">网站留言</a></li>
      </ul>
    </dd>
  </dl>
  <dl class="dropdown">
    <dt id="three-ddheader" class="upperdd">最新下载</dt>
  </dl>
  <dl class="dropdown">
    <dt id="four-ddheader" onmouseover="ddMenu('four',1)" onmouseout="ddMenu('four',-1)">欢迎再来</dt>
    <dd id="four-ddmrc" onmouseover="cancelHide('four')" onmouseout="ddMenu('four',-1)">
      <ul>
        <li><a href="#" class="underline">欢迎再来mb5u.com</a></li>
        <li><a href="#">慢走，不送</a></li>
      </ul>
    </dd>
  </dl>
</div>
</div>
</body>
</html>

所属频道：菜单导航特效/更新时间：2012-11-03

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特效说明：
菜单导航模板-JavaScript横向滑出的多级菜单。