function jump(root, mod){
	if(isMobile()){
		var http = document.location.protocol;
		var url = window.location.href;
		var host = http+'//' + window.location.host + root;
		if(mod == 'Home' || mod == 'home'){
			mod = '';
		}
		var leng = host.length + mod.length;
		var newUrl = url.substring(leng);
		var mobile_url = host + 'mb/' + newUrl;
		location.href = mobile_url;
	}
}


//判断是否是手机
function isMobile(){
    var isMobile ={
        Android: function () {
            return navigator.userAgent.match(/Android/i) ? true : false;
        },
        BlackBerry: function () {
            return navigator.userAgent.match(/BlackBerry/i) ? true : false;
        },
        iOS: function () {
            return navigator.userAgent.match(/iPhone|iPad|iPod/i) ? true : false;
        },
        Windows: function () {
            return navigator.userAgent.match(/IEMobile/i) ? true : false;
        },
        any: function () {
            return (isMobile.Android() || isMobile.BlackBerry() || isMobile.iOS() || isMobile.Windows());
        }
    };
    return isMobile.any(); //是移动设备
}