title: Javascript make a word not editable into the text area
body: <p>I have a basic text area.
  I need a javascript function that will write a word ( i.e. #default ) into this textarea and will make ONLY this word not editable.
  The rest of the textarea should remain writable as normal. Only the words defined via javascript should not be editable by the user.
  Is there a way to do it that will work on IE7as well?</p>
  
  <p>Thanks for the support.</p>