滑动效果

 1 <html xmlns="http://www.w3.org/1999/xhtml">
 2 <head>
 3 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 4 <title>无标题文档</title>
 5 <style type="text/css">
 6    *{ margin:0px auto; padding:0px}
 7    #wai{ width:100%; height:200px;}
 8    #left{height:200px; background-color:#63C; float:left}
 9    #right{ height:200px; background-color:#FC3; float:left}
10    #anniu{ width:50px; height:50px; background-color:#06F; position:absolute; top:120px; z-index:10; }
11    #anniu:hover{ cursor:pointer}
12 </style>
13 </head>
14  
15 <body>
16  </br></br>
17 <div id="wai">
18     <div id="left" style="200px"></div>
19     <div id="right" style="600px"></div>
20 </div>
21  
22 <div id="anniu" style="left:175px" onclick="hua()"></div>
23  
24 <script type="text/javascript">
25  
26 var id;
27  
28 function hua()
29 {
30     id = window.setInterval("dong()",10);
31 }
32  
33 //滑动的方法，调一次滑动3px
34 function dong()
35 {
36     //改蓝色的宽度 200px
37     var zuo = document.getElementById("left");
38     kd = zuo.style.width;
39      
40     if(parseInt(kd.substr(0,kd.length-2))>=600)
41     {
42         window.clearInterval(id);
43         return;
44     }
45      
46     kd = parseInt(kd.substr(0,kd.length-2))+3;
47     zuo.style.width = kd+"px";
48      
49     //改黄色的宽度
50     var you = document.getElementById("right");
51     ykd = you.style.width;
52     ykd = parseInt(ykd.substr(0,ykd.length-2))-3;
53     you.style.width = ykd+"px";
54      
55     //改小块的left
56     var hong = document.getElementById("anniu");
57     hleft = hong.style.left;
58     hleft = parseInt(hleft.substr(0,hleft.length-2))+3;
59     hong.style.left = hleft+"px";
60      
61      
62 }
63  
64 </script>
65 
66 </body>
67 </html>