代码显示没有错误，就是运行不成功，求指教

js代码

function getStyle(obj,attr){

   if(obj.currentStyle)

   {

return obj.currentStyle[attr];   

   }

   else{

  return getComputedStyle(obj,false)[attr];   

   }

}

function showMove(obj,json,fc){

         clearInterval(obj.timer); //清除上一个计时器

obj.timer=setInterval(function(){

var flag=true;

for(var attr in json)

{

var getsome;

if(attr=="opacity")

{

getsome=Math.round(parseFloat(getStyle(obj,attr))*100);

}

else{

  getsome=parseInt(getStyle(obj,attr));

}

var speed;

if(getsome>json[attr])

{

  speed=-2;

}

else{

speed=2;

}

if(getsome!=json[attr])

{

 flag=false;

}

 if(attr=="opacity")

 {

obj.style.filter="alpha(opacity:'+(getsome+speed)+')";  

obj.style.opacity=(getsome+speed)/100;

 }

 else{

obj.style[attr]=getsome+speed+"px";  

 }

if(flag)

{

clearInterval(obj.timer);

if(fc)

{

fc();

}

}

}

},30);

}

html页面调用代码

<script language="javascript" src="speed9.js"></script>

<script language="javascript">

window.onload=function(){

    var allDiv=document.getElementById("d1");

window.onload=function(){

allDiv.onmouseover=function(){

   showMove(allDiv,{width:300,height:120,opacity:100});

}

allDiv.onmouseout=function(){

 showMove(allDiv,{width:150,height:60,opacity:30});

}

}

}

</script>