菜单条_div实现二级竖菜单
简单实现二级竖菜单的功能：
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title><script type="text/javascript">function a(div) {var divs = document.getElementsByTagName("div");//得到所有的divfor ( var i = 0; i < divs.length; i++) {if (divs[i].id == div) {if (divs[i + 1].style.display == "block") {divs[i + 1].style.display = "none";} else {divs[i + 1].style.display = "block";}}}}</script></head><body><div id="a" onclick="a(this.id)" style="cursor: hand">首页</div><div id="aa" style="display: none"><div id="a1">1</div><div id="a2">2</div><div id="a3">3</div><div id="a4">4</div></div><div id="b" onclick="a(this.id)" style="cursor: hand">首页</div><div id="bb" style="display: block"><div id="b1">1</div><div id="b2">2</div><div id="b3">3</div><div id="b4">4</div></div></body></html>?注：从cnblogs搬家的
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