function fixForm(form, job_index)
{
    var fieldIndex = 0;
    // loop through all form elements
    for ( var ix = 0; ix < form.elements.length; ++ix )
    {
        var fld = form.elements[ix];
        // look for job_id fields only
        if ( fld.name.substring(0,6) == "job_id")
        {
            // look for field whose index equals job_index
            if (fieldIndex == job_index)
            {
                fld.checked = true;
                break;
            }
            fieldIndex = fieldIndex + 1;
        }
    }
    return true;
}