One of my customers wants to replace some Forms applications using APEX. One of the critical issues was the possibility to warn the user before exiting the existing form (switching tabs, closing browser window or tab or simply using the back button). In this example in my Demo Application I created a proof of concept using some older threads and demos.
I while ago I had an issue with the ExtJS tree. Somebody mentioned that not all parts of an ext tree node (for example the icons or the empty area) get called by an onClick event. There are just two line of code you need to add to your tree: