var links = ['', "http://www.aobi.com/parents/", "http://pay.aobi.com/site/aboutruby.html",
			 "http://pay.aobi.com/site/mycard.html","http://pay.aobi.com/site/mycard.html?repay=true",
			 "http://pay.aobi.com/site/faq.html","http://pay.aobi.com/site/balance/mycard.html",
			 "http://pay.aobi.com/site/balance/aboutbalance.html","http://pay.aobi.com/site/balance/faq.html",
			 "http://www.aobi.com/comm/","http://www.aobi.com/help/quickstart.html",
			 "http://www.aobi.com/help/intro.html","http://www.aobi.com/help/features.html",
			 "http://www.aobi.com/help/faq.html","http://www.aobi.com/help/question.html",
			 "http://www.aobi.com/help/feedback.html","http://play.aobi.com/",
			 "http://play.aobi.com/?reg","http://english.aobi.com/",
			 "http://pay.aobi.com/site/searchcard.html"
];
function nav(index)
{
    window.location.href = links[index];
}