网站主页判断是否未wap断请求，自动跳转到wap端

<script type="text/javascript">
    //平台、设备和操作系统
    var system = {
        win: false,
        mac: false,
        xll: false
    };
    //检测平台
    var p = navigator.platform;
    system.win = p.indexOf("Win") == 0;
    system.mac = p.indexOf("Mac") == 0;
    system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);
    //跳转语句，如果是手机访问就自动跳转到wx.xxx.com页面
    if (system.win || system.mac || system.xll) {
    } else {
        window.location.href = "http://wx.xxx.com";
    }
</script>