jquery validate multi email

    $.validator.addMethod('emails', function(value, element, param) { 

        if (this.optional(element)) // return true on optional element
            return true;
        var emails = value.split(';');
        valid = true;
        for(var i in emails) {
             value = emails[i];
             valid=valid && jQuery.validator.methods.email.call(this, value, element);
        }
        return valid;
        
    }, 'Please enter correct email address and separate multiple emails with ";".!');