Yes it is possible and should be able to do it using Dynamic Actions
Found an example on the internet - http://www.shellprompt.net/pls/apex/f?p=566:8:0:::::
But this is very old and I would recommend you to use Dynamic Actions
Thanks, I do understand on how to show a modal page when clicking on a link or button.
But my request is to show a modal page when double clicking in any of the tabular form fields so that the user can enter a comment.
Is it possible to have a modal page/popup page when double clicking in a text field? I can't seem to get it working.