求大神帮忙看看哪里错了，显示不出
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
*{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>
<script type="text/javascript">
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>
<div id=div1><span>分享</span></div>
</body>
</html>
