判断客户端类型

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    /* redirect sang mobile */
    var Browser = {
        detectBrowser:function()
        {//出自http://www.cnblogs.com/ahjesus 尊重作者辛苦劳动成果,转载请注明出处,谢谢!
            var type    = 0;
            var userAgent    = navigator.userAgent;
            switch (true) {
                /* Symbian 3 */
                case (userAgent.search(/Symbian\/3/gi) > -1):
                    type    = 2;
                    break;
                /* midp compatible */
                case userAgent.indexOf('MIDP') > -1:
                    type    = 1;
                    break;
                /* opera mini */
                case userAgent.indexOf('Opera Mini') > -1:
                    type    = 1;
                    break;
                /* MAUI */
                case userAgent.indexOf('MAUI') > -1:
                    type    = 1;
                    break;
                /* mobile safari */
                case userAgent.search(/Mobile.*Safari/gi) > -1:
                    if (userAgent.indexOf('iPad') > -1) {
                        if (!zm.cookie('IS_NOT_PC')) {
                            zm.cookie('BANNER_OFF', '1', {expires: 100, path: '/'});
                        }
                        zm.cookie('IS_NOT_PC', '1', {expires: 2, path: '/'});
                        MP3.IS_NOT_PC    = 1;
                        type    = 0;
                    } else {
                        type    = 2;
                    }
                    break;
                /* Iphone */
                case userAgent.indexOf('iPhone') > -1:
                    type    = 2;
                    break;
                /* Ipod */
                case userAgent.indexOf('iPod') > -1:
                    type    = 2;
                    break;
                /* Android */
                case userAgent.indexOf('Android') > -1:
                    type    = 2;
                    break;
                /* Samsung */
                case userAgent.indexOf('samsung') > -1:
                    type    = 1;
                    break;
                /* LG */
                case userAgent.indexOf('LG') > -1:
                    type    = 1;
                    break;
                /* Motorola */
                case userAgent.indexOf('MOT') > -1:
                    type    = 1;
                    break;
                /* Motorola */
                case userAgent.indexOf('MOTOROLA') > -1:
                    type    = 1;
                    break;
                /* BlackBerry compatible */
                case userAgent.indexOf('BlackBerry') > -1:
                    type    = 1;
                    break;
                /* Nokia */
                case userAgent.indexOf('Nokia') > -1:
                /* IEMobile compatible */
                case userAgent.indexOf('IEMobile') > -1:
                    type    = 1;
                    if (userAgent.indexOf('Windows Phone') > -1) {
                        type    = 2;
                    }
                    break;
                /* HTC */
                case userAgent.indexOf('HTC') > -1:
                    type    = 1;
                    break;
                default:
                    type    = 0;
                    break;
            }//出自http://www.cnblogs.com/ahjesus 尊重作者辛苦劳动成果,转载请注明出处,谢谢!
            return type;
        }
    }
    var cookiRedir    = zm.cookie('IS_MOBILE');
    var type    = 0;
    type        = Browser.detectBrowser();
    if (type > 0) {
        MP3.BANNER_OFF    = 1;
    }
    var domain, uri    = '';
    uri        = location.pathname + location.search;
    if (type > 0 && cookiRedir != 0) {
        switch (type) {
            case 2:
                domain    = 'http://m.mp3.zing.vn';
                break;
            case 1:
                domain    = 'http://mp3.m.zing.vn/redirect?url=http://mp3.zing.vn';
                break;
        }
        location.href    = domain + uri;
    }
    // check banner off
    MP3.BANNER_OFF    = zm.cookie('BANNER_OFF');
    if (typeof (MP3.BANNER_OFF) == 'undefined' || MP3.BANNER_OFF == '') {
        MP3.BANNER_OFF    = 0;
    }
    if (MP3.IEVERSION < 7) {
        MP3.BANNER_OFF    = 1;
    }
</script>