function sendBookingForm(frm){
    validator.setAlert(true);
    if(validator.isNull(frm.category.value)){
        frm.category.focus();
        return false;
    }
    
    if(validator.isNull(frm.date.value)){
        frm.date.focus();
        return false;
    }

    if(validator.isNull(frm.address.value)){
        frm.address.focus();
        return false;
    }

    if(validator.isNull(frm.city.value)){
        frm.city.focus();
        return false;
    }
    
    if(validator.isNull(frm.zip.value)){
        frm.zip.focus();
        return false;
    }
    
    return true;
}