I know nothing of JavaScript.
I had to add a group of two radio buttons to an HTML form with values yes and no.
Now I need to make them required
There are several other required fields in the form and this piece of JavaScript:

    <SCRIPT LANGUAGE=JavaScript>

<!--

reqd_fields = new Array();

reqd_fields[0] = name;

reqd_fields[1] = title;

reqd_fields[2] = company;

reqd_fields[3] = address;

reqd_fields[4] = city;

reqd_fields[5] = state;

reqd_fields[6] = zip;

reqd_fields[7] = phone;

reqd_fields[8] = email;

reqd_fields[9] = employee;



function validate(form_obj) {

  if (test_required && !test_required(form_obj)) {

    return false;

  }

It was done by someone else, not me.
What I did is just added my field to this array, like this:

reqd_fields[10] = acknowledge;

However it doesn't seem to be working.

Please guide me as I am totally ignorant when it comes to JavaScript.