                        课程
                    
                        /前端开发
                        
                            /JavaScript
                        
                        /JS动画效果

为什么我的没有效果，不晓得哪里出问题了

<!DOCTYPE >
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>完美动画效果</title>
<script type="text/javascript" src="js/move.js"></script>
<link href="css/style.css" rel="stylesheet" type="text/css"/>
<script>
window.onload=function(){
 var move=document.getElementById("move");
 var list=move.getElementsByTagName("a");
 for(var i=0;i<list.length;i++){
 list[i].onmouseover=function(){
 var _this=this.getElementsByIdName("i")[0];
 startMove(_this,{top:-8,opacity:0},function(){
 _this.style.top=30+"px";
 startMove(_this,{top:8,opacity:100})
 });
 }
 }
 }

</script>
</head>

<body>
 <div class="move" id="move">
 <a href="#"><img src="images/phone.png"/>充话费</a>
 <a href="#"><img src="images/movie.png"/>电影</a>
 <a href="#"><img src="images/music.png"/>音乐</a>
 <a href="#"><img src="images/game.png"/>游戏</a>
 <a href="#"><img src="images/lottery.png"/>彩票</a>
 <a href="#"><img src="images/safe.png"/>保险</a>
 <a href="#"><img src="images/managemoney.png"/>理财</a>
 <a href="#"><img src="images/tickets.png"/>火车票</a>
 <a href="#"><img src="images/tour.png"/>旅游</a>

 </div>

</body>
</html>

////////////////////////////万能运动框架
function getStyle(obj,attr){
 if(obj.currentStyle){
 return obj.currentStyle[attr];
 }
 else{
 return getComputedStyle(obj,false)[attr];
 }
 }
function startMove(obj,attr,iTarget,fn){
 clearInterval(obj.timer);
 obj.timer=setInterval(function(){
 //1.取当前的值
 var icur=0;
 if(attr=="opacity"){
 icur=Math.round(parseFloat(getStyle(obj,attr))*100);
 }
 else{
 icur=parseInt(getStyle(obj,attr));
 }
 //2.算速度
 var speed=(iTarget-icur)/8;
 speed=speed>0?Math.ceil(speed):Math.floor(speed);
 //3.检测停止
 if(icur==iTarget){
 clearInterval(obj.timer);
 if(fn){
 fn();
 }
 }
 else{
 if(attr=="opacity"){
 obj.style.filter="alpha:(opacity:"+icur+speed+")";
 obj.style.opacity=(icur+speed)/100;
 }
 else{
 obj.style[attr]=icur+speed+"px";
 }
 }
 },30)
 }