function menu1() { location.href = "http://vip.cins.cn/product/page.php?jf_page=vip"; }
function menu2() { location.href = "http://sa2.cins.cn"; }
function menu3() { location.href = "http://games.sina.com.cn/stoneage2/index.shtml"; }
function menu4() { location.href = "http://newgame.17173.com/_stoneage2"; }