function checkMobile(mobile, message)
{
    var reg0 = /^13\d{9}$/;
    var reg1 = /^14\d{9}$/;
    var reg2 = /^15\d{9}$/;
    var reg3 = /^18\d{9}$/;

    var my = false;
    if (reg0.test(mobile)) {
        my = true;
    }
    else if (reg1.test(mobile)) {
        my = true;
    }
    else if (reg2.test(mobile)) {
        my = true;
    }
    else if (reg3.test(mobile)) {
        my = true;
    }
    if (!my) {
        alert(message);
    }
    return my;
}