1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <title>使用JavaScript控制圆弧背景的导航菜单_网页代码站(www.webdm.cn)</title>
5 <style type="text/css">
6 *{margin:0px;padding:0px;font-size:12px;}
7 .div_menu{ position:absolute;left:100px;top:100px;}
8 .ul_menu{list-style:none;}
9 .ul_menu li{float:left;margin-left:1px;border:1px solid #33CCCC;display:block;padding:5px 3px;background:url
10
11 (http://www.webdm.cn/images/20090910/menu_bg.gif) repeat-x 0px -80px;padding:2px 12px;}
12 .ul_menu li a{height:40px;width:auto;color:#ffffff;font-size:20px;font-weight:600;text-decoration:none;}
13 </style>
14 <script type="text/javascript">
15 var isIE = (document.all)?true:false;
16 var $ID = function(id){
17 return "string"==typeof id?document.getElementById(id):id;
18 }
19 var Class = {
20 create:function(){
21 return function(){
22 this.initilize.apply(this,arguments);
23 }
24 }
25 }
26 var Extend = function(destination, source){
27 for(var property in source){
28 destination[property] = source[property];
29 }
30 }
31 var Bind = function(object,fun){
32 var args = Array.prototype.slice.call(arguments).slice(2);
33 return function(){
34 return fun.apply(object,args);
35 }
36 }
37 var BindAsEventListener = function(object,fun){
38 var args = Array.prototype.slice.call(arguments).slice(2);
39 return function(event){
40 return fun.apply(object,[event||window.event].concat(args));
41 }
42 }
43 function addEventHandler(oTarget, sEventType, fnHandler) {
44 if (oTarget.addEventListener) {
45 oTarget.addEventListener(sEventType, fnHandler, false);
46 } else if (oTarget.attachEvent) {
47 oTarget.attachEvent("on" + sEventType, fnHandler);
48 } else {
49 oTarget["on" + sEventType] = fnHandler;
50 }
51 };
52 function removeEventHandler(oTarget, sEventType, fnHandler) {
53 if (oTarget.removeEventListener) {
54 oTarget.removeEventListener(sEventType, fnHandler, false);
55 } else if (oTarget.detachEvent) {
56 oTarget.detachEvent("on" + sEventType, fnHandler);
57 } else {
58 oTarget["on" + sEventType] = null;
59 }
60 };
61 </script>
62 <script type="text/javascript">
63 var MyMenu = Class.create();
64 MyMenu.prototype = {
65 initilize:function(ul){
66 this.lis = ul.getElementsByTagName("li");
67 for(var i=0;i<this.lis.length;i++){
68 new BgChange(this.lis[i]);
69 }
70 }
71 }
72 var BgChange = Class.create();
73 BgChange.prototype = {
74 initilize:function(li){
75 this.li = li;
76 this._fnMouseOver = Bind(this,this.MouseOver);
77 this._fnMouseOut = Bind(this,this.MouseOut);
78 addEventHandler(this.li,"mouseover",this._fnMouseOver);
79 addEventHandler(this.li,"mouseout",this._fnMouseOut);
80 this.timer = null;
81 this.i = -80;
82 },
83 MouseOver:function(){
84 this.Stop();
85 this.i+=2;
86 if(this.i>=0){
87 window.clearTimeout(this.timer);
88 this.i = 0;
89 }else{
90 this.ShowBg();
91 this.timer = window.setTimeout(this._fnMouseOver,10);
92 }
93 },
94 MouseOut:function(){
95 this.Stop();
96 this.i-=2;
97 if(this.i<=-80){
98 window.clearTimeout(this.timer);
99 this.i = -80;
100 }else{
101 this.ShowBg();
102 this.timer = window.setTimeout(this._fnMouseOut,10);
103 }
104 },
105 ShowBg:function(){
106 this.li.style.backgroundPosition = "0px " + this.i + "px";
107 },
108 Stop:function(){
109 if(this.timer){
110 window.clearTimeout(this.timer);
111 }
112 }
113 }
114 onload = function(){
115 new MyMenu($ID("ul_menu"));
116 }
117 </script>
118 </head>
119 <body>
120 <div class="div_menu">
121 <ul class="ul_menu" id="ul_menu">
122 <li><a href="http://www.webdm.cn/">网页代码站</a></li>
123 <li><a href="#">最新更新</a></li>
124 <li><a href="http://www.webdm.cn/">下载排行</a></li>
125 <li><a href="#">网页特效</a></li>
126 <li><a href="http://www.webdm.cn/">广告联系</a></li>
127 </ul>
128 </div>
129 </body>
130 </html>
131 <br>
132 <a href="http://www.webdm.cn">网页代码站</a> - 最专业的代码下载网站 - 致力为中国站长提供有质量的代码！
文章来自：http://www.webdm.cn/webcode/7eb3db31-494c-45fd-9469-0ac40938651d.html