求大神帮忙看看哪里错了，显示不出

源自：2-1 JS速度动画

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>无标题文档</title>

*{margin:0; padding:0}

#div1{width:200px; height:200px; background:yellow; position:relative; left:-200px; top:0}

#div1 span{width:20px; height:50px; background:green; position:absolute; left:200px; top:75px}

</style>

window.onload=function(){

var Odiv=document.getElementById("div1");

Odiv.onmouseover=function(){

Move(0)}

Odiv.onmouseout=function(){

Move(-200)}

}

var time=null;

function Move(target){

clearInterval(time);

var Odiv=document.getElementById("div1");

time=setInterval(function(){

var speed=0;

if(Odiv.offsetLeft>targrt){

speed=-10;}

else{

speed=10;}

if(Odiv.offsetLeft==target){

clearInterval(time)}

else{

Odiv.style.left=Odiv.offsetLeft+speed+"px"}},30)}

</script>

</head>

<body>

</body>

</html>

提问者：z921129H 2016-04-10 13:42