how do i make 1 field OR another be required

[Trish_Voskovitc]

i want to have 2 fields on a form but  set it up so that only 1 of the fields is required- if they fill out question A they don't have to do B or if they fill out B they don't have to do A.  but they have to do one or the other.
does anytone know how to do this or if it can even be done?

[Anonymous]

That can be achieved through JavaScript/jQuery.

The code will be similar to

<s c r i pt>

        $(document).ready(function (){

            $("#input_b").change(function() {

                if ($(this).val() != "") {

                    $("#input_a").show();

                }else{

                    $("#input_a").hide();

                } 

            });

        });

</s c r i p t>

* spaces added to the word "script" to avoid the portal interpreting as a script.