圆弧背景的导航菜单_菜单导航特效

效果个性的CSS导航，鼠标经过期出现有趣弧形背景，实际上，这里用CSS调用了背景，用JavaScript控制了背景的移动，用jQuery实现过类似的功能，整体感觉很不错。

<!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>圆弧背景的导航菜单</title>
<meta http-equiv="mrc-type" mrc="text/html;charset=gb2312">
<style type="text/css">
*{margin:0px;padding:0px;font-size:12px;}
.div_menu{ position:absolute;left:100px;top:100px;}
.ul_menu{list-style:none;}
.ul_menu li{float:left;margin-left:1px;border:1px solid #33CCCC;display:block;padding:5px 3px;background:url(http://p1.mb5u.com/texiao/1/menu_bg.gif) repeat-x 0px -80px;padding:2px 12px;}
.ul_menu li a{height:40px;width:auto;color:#ffffff;font-size:20px;font-weight:600;text-decoration:none;}
</style>
<script type="text/javascript">
var isIE = (document.all)?true:false;
var $ID = function(id){
	return "string"==typeof id?document.getElementById(id):id;
}
var Class = {
	create:function(){
		return function(){
			this.initilize.apply(this,arguments);
		}
	}
}
var Extend = function(destination, source){
	for(var property in source){
		destination[property] = source[property];
	}
}
var Bind = function(object,fun){
	var args = Array.prototype.slice.call(arguments).slice(2);
	return function(){
		return fun.apply(object,args);
	}
}
var BindAsEventListener = function(object,fun){
	var args = Array.prototype.slice.call(arguments).slice(2);
	return function(event){
		return fun.apply(object,[event||window.event].concat(args));
	}
}
function addEventHandler(oTarget, sEventType, fnHandler) {
	if (oTarget.addEventListener) {
		oTarget.addEventListener(sEventType, fnHandler, false);
	} else if (oTarget.attachEvent) {
		oTarget.attachEvent("on" + sEventType, fnHandler);
	} else {
		oTarget["on" + sEventType] = fnHandler;
	}
};
function removeEventHandler(oTarget, sEventType, fnHandler) {
    if (oTarget.removeEventListener) {
        oTarget.removeEventListener(sEventType, fnHandler, false);
    } else if (oTarget.detachEvent) {
        oTarget.detachEvent("on" + sEventType, fnHandler);
    } else { 
        oTarget["on" + sEventType] = null;
    }
};
</script>
<script type="text/javascript">
var MyMenu = Class.create();
MyMenu.prototype = {
	initilize:function(ul){
		this.lis = ul.getElementsByTagName("li");
		for(var i=0;i<this.lis.length;i++){
			new BgChange(this.lis[i]);
		}
	}
}
var BgChange = Class.create();
BgChange.prototype = {
	initilize:function(li){
		this.li = li;
		this._fnMouseOver = Bind(this,this.MouseOver);
		this._fnMouseOut = Bind(this,this.MouseOut);
		addEventHandler(this.li,"mouseover",this._fnMouseOver);
		addEventHandler(this.li,"mouseout",this._fnMouseOut);
		this.timer = null;
		this.i = -80;
	},
	MouseOver:function(){
		this.Stop();
		this.i+=2;
		if(this.i>=0){
			window.clearTimeout(this.timer);
			this.i = 0;
		}else{
			this.ShowBg();
			this.timer = window.setTimeout(this._fnMouseOver,10);
		}
	},
	MouseOut:function(){
		this.Stop();
		this.i-=2;
		if(this.i<=-80){
			window.clearTimeout(this.timer);
			this.i = -80;
		}else{
			this.ShowBg();
			this.timer = window.setTimeout(this._fnMouseOut,10);
		}
	},
	ShowBg:function(){
		this.li.style.backgroundPosition = "0px " + this.i + "px";
	},
	Stop:function(){
		if(this.timer){
			window.clearTimeout(this.timer);
		}
	}
}
onload = function(){
	new MyMenu($ID("ul_menu"));
}
</script>
</head>
<body>
<div class="div_menu">
  <ul class="ul_menu" id="ul_menu">
    <li><a href="/">欢迎光临</a></li>
    <li><a href="#">最新更新</a></li>
    <li><a href="#">下载排行</a></li>
    <li><a href="/jscss/">网页特效</a></li>
    <li><a href="#">广告联系</a></li>
  </ul>
</div>
</body>
</html>

所属频道：菜单导航特效/更新时间：2011-02-24

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