[Trinidad] Override onclick Event

[Rottstock, Sven]

Hi list,

i have to dynamically override the onclick method. Currently i used the
following code snippet:

<script>
  var completeBtn =
window.document.getElementById("activityPanel:activityActionPane:complet
e-button");
  var oldOnClickMethod = null;
  if(completeBtn != null)
  {
    oldOnclickMethod = completeBtn.onclick;
    completeBtn.onclick = doMyAction;
  }
  function doMyAction() {
     // perform additional tasks here...
     // ...
     // ...
     oldOnClickMethod();
  }
</script>

I cannot imagine that this solution is the best way (but it works for
me)...have anybody a hint for me how i can do that in a "Trinidad way"?

Regards,

Sven