title: Oracle form: How to disable/enable certain blocks or fields in form by switching radio buttons?
body: <p>I have three radio buttons in my Oracle form. Ideally, selecting one option would enable block1 and disable block2 and block3. How this could be achieved? Global variable? Which trigger 'listen' to changes of radio button? </p>
  
  <p>DB is Oracle6i.</p>
  
  <p>Any help greatly appreciated.</p>