你看我的
哪有错
<script language="JavaScript" type="text/JavaScript">
<!--
function show5(time){
var aa1=time;
aa1=aa1-1;
allert(aa1)
if(aa1==0)
document.form1.aa.submit();
setTimeout("show5('aa1')",1000)
}
-->
</script>
</head><body onLoad="show5(5)">
<form name="form1" action="2.jsp" method="post">
<input name="aa" type="submit">
</form>
</body>
</html>