1、如何实现点击[+]递增，或[-]减少下面的表单输入格式
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head></head><script type="text/javascript">
$ = function (id){
return document.getElementById(id)
};
</script><body>
<!-- 每次增加1，就更新一下value的值就ok了 -->
<input type="button" id="vote" value="<%=0 %>">
<a href="javascript:;" οnclick=$("vote").value++>
<input type="button" id="vote" value="投票"></a></body>
</html>
###################### 下面是原版的代码！
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<SCRIPT LANGUAGE="JavaScript">
$ = function (id){
return document.getElementById(id)
};
</SCRIPT>改变值<a href="javascript:;" οnclick=$("vote").value++>[+]</a><a href="javascript:;" οnclick=$("vote").value-->[-]</a>
<hr>
<input type="text" id="vote" value="0" size="60" maxLength="160">
<br>
