仿flash动画导航(html+css+js)

废话不多说,先给出CSS

body{margin:100px 0}
.clear:after{content:"."; display:block; height:0; clear:both; visibility:hidden}.clear{display:inline-block}.clear{display:block}
div#nav{height:70px; background:url(img/nav_bg.png) repeat-x}
div#nav ul{width:960px; margin:0 auto; list-style:none}
div#nav ul li{float:left; height:35px; overflow:hidden; padding:0 2px 0 0; font: bold 12px/35px Arial; background:url(img/nav_right.png) repeat-y right 0}
div#nav ul li a{float:left; height:100%; padding:0 20px; background:url(img/nav_sub.png) repeat-x; color:#fff; text-decoration:none}
div#nav ul li a.hover{clear:both; background-position:0 -35px}
div#nav ul li.on a{background-position:0 -35px}
div#nav ul li.nobg{background:none}

html

<div id="nav">
<ul class="clear">
<li class="on"><a href="javascript:;" mce_href="javascript:;">首页</a></li>
<li><a href="javascript:;" mce_href="javascript:;">麦鸡</a></li>

<li><a href="javascript:;" mce_href="javascript:;">麦鸡</a></li>
<li><a href="javascript:;" mce_href="javascript:;">麦鸡</a></li>
<li><a href="javascript:;" mce_href="javascript:;">MacJi</a></li>

<li><a href="javascript:;" mce_href="javascript:;">麦鸡</a></li>
<li><a href="javascript:;" mce_href="javascript:;">麦鸡</a></li>
<li class="nobg"><a href="http://www.macji.com" mce_href="http://www.macji.com">麦鸡的博客</a></li>

</ul>
</div>

JavaScript

function nav(c, config){
  this.config = config || {speed: 10, num: 2};
  this.container = (typeof(c)=="object") ? c : document.getElementById(c);
  this.lineHeight = this.container.offsetHeight;
  this.scrollTimeId = null;
  var _this = this;  

  this.__construct = function (){
    var inner,el,href;
    inner = _this.container.childNodes[0].innerHTML;
    href = _this.container.childNodes[0].href;
    el = document.createElement("a");
    el.innerHTML = inner;
    el.href = href;
    el.className = 'hover';
    _this.container.appendChild(el);  

    //注册事件
    _this.container.onmouseover = function (){_this.start()};
    _this.container.onmouseout  = function (){_this.end()};
  }();  

  this.start = function (){
    _this.clear();
    _this.scrollTimeId = setTimeout(function(){_this.scrollUp();}, _this.config.speed);
  };  

  this.end = function (){
    _this.clear();
    _this.scrollTimeId = setTimeout(function(){_this.scrollDown();}, _this.config.speed);
  };  

  this.scrollUp = function (){
    var c = _this.container;  

    if(c.scrollTop >= _this.lineHeight){c.scrollTop = _this.lineHeight;return;}
    c.scrollTop += _this.config.num;
    _this.scrollTimeId = setTimeout(function(){_this.scrollUp();}, _this.config.speed);
  };  

  this.scrollDown = function (){
    var c = _this.container;  

    if(c.scrollTop <= 0){c.scrollTop = 0;return;}
    c.scrollTop -= _this.config.num;
    _this.scrollTimeId = setTimeout(function(){_this.scrollDown();}, _this.config.speed);
  };  

  this.clear = function (){clearTimeout(_this.scrollTimeId)};
}

调用方法

(function(){
  var container = document.getElementById('nav');
  var el_li = container.getElementsByTagName('li');
  var arr = [];
  for( var i = 0; i < el_li.length; i++){
    //如果不是当前页面(className  == 'on')就实例化
    if(el_li[i].className == 'on') continue;
    arr[i] = new nav(el_li[i], {speed: 10, num: 4});
  }
})();

查看效果