一个关于菜单的问题，我看不太懂，有人可以帮我注释，讲解一下吗，谢了(程序5)几个问题连起来就是一个完整的程序

[missshan]

mpmenu1=new mMenu('网站首页','/','self','','','','');
mpmenu1.addItem(new mMenuItem(' 用户注册','/register.asp','self',false,'用户注册',null,'','','',''));
mpmenu1.addItem(new mMenuItem(' 用户登录','/login.asp','self',false,'用户登录',null,'','','',''));
mpmenu1.addItem(new mMenuItem(' 用户退出','/login.asp?action=logout','self',false,'用户退出',null,'','','',''));
mpmenu1.addItem(new mMenuItem(' 资料修改','/bbs/MYMODIFY.ASP','self',false,'',null,'','','',''));
mwritetodocument();
</script>

</body>
</html>