http://vote.usivote.com/packages/user/js/users.js

/* Javascript Helpers */

/*
 * Users::signup.thtml
 *
 * Used to hide/show student id field depending on the users status
 */
function checkAccountStatus(categoryObject)
{
    var i = categoryObject.selectedIndex;

    if(i >= 0)
    {
        if(categoryObject.options[i].value == "Student" || categoryObject.options[i].value == "Postgraduate Student")
            document.getElementById('student_id_field').style.display='';
        else
            document.getElementById('student_id_field').style.display='none';

        if(categoryObject.options[i].value == "Staff Member")
            document.getElementById('staff_id_field').style.display='';
        else
            document.getElementById('staff_id_field').style.display='none';
    }
}

/*
 * Users::edit.thtml
 *
 * Used to hide/show password help note when changing a user from student to normal
 */
function determineChangeCategoryPasswordHelpNote(categoryObject,current)
{
    var i = categoryObject.selectedIndex;

    if(i >= 1)
    {
        if(current == "Student" || current == "Postgraduate Student")
        {
            if(categoryObject.options[i].value == "Student" || categoryObject.options[i].value == "Postgraduate Student")
                document.getElementById('password_change_note').style.display='none';
            else
                document.getElementById('password_change_note').style.display='';
        }
        else
            document.getElementById('password_change_note').style.display='none';
    }
}