如何使用jQuery远程验证依赖于表单中另一个字段的字段？

I have a form in which I am using remote validation to check if an email address already exists in the database. However, the catch is that on this form, the user can select between several different "groups", and each group has its own distinct set of email addresses (thus the same email can exist once in each group).I have a form in which I am using remote valida