Trapping events in a notebook

I only noticed two events for the notebook in the Docs ie the page changed
events.

Is it possible to detect the mouse click say over a tab, and then use this to
make a popup menu with options of what to do with the page on the tab.

also is it possible to detect a click event to the right of the tabs and have
a popup menu for the notebook as a whole.

Lastly, I can add pages/delete pages, but couldn't find the command to set the
current tab to be the one up front.

any help appreciated.

Richard Terry