Popup

Hello, I am creating a plugin that captures the hook that is triggered when a post is made into the wall, and would like to generate a popup view to the user to show information about the post.

I've tried generating a view in the hook handler status but nothing is generated, probably because the event is triggered when the action has finished and nothing can be shown, I'm thinking on using now the publish event. What would be the event i should catch to put a poup view with info about the post made into the wall?

Thanks in advance