js监听键盘方向键事件

 <SCRIPT language=javascript>
    document.onkeydown = chang_page;
    function chang_page() {
        if (event.keyCode ==  || event.keyCode == ) location = 'http://www.maitianquan.com';
        if (event.keyCode ==  || event.keyCode == ) location = 'http://www.lanrentuku.com'
    }
  </SCRIPT>

http://www.wonima.com