Js的一个小问题
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<style type="text/css">
#d{position:absolute;width:100;height:360;top:200;left:0;border:red 1px solid}
</style>
<script language="javascript">
function goin()
{
if (d.style.left>-95)
{
d.style.left=d.style.left-10;
alert(d.style.left)
}
setTimeout("goin()",1000);
}
</script>
</HEAD>
<BODY >
<div id=d onmouseout="goin()"></div>
</BODY>
</HTML>
为什么只执行一次