title: jQuery validate plugin require field if another field has a value and vice versa
body: <p>I am using the jQuery validate plugin to validate my form.  I would like to tie several pairs of fields together such that if one field has a value, the other is required to have a value also.  Essentially both fields (both text inputs) must either both have a value or both not have a value.  Is anyone aware of a good way to accomplish this?</p>