1) That is back-and-forward navigation and needs to be heavily scripted. Start here: http://www.modularfilemaker.org/module/browser-navigation/
2) Try hiding/locking the toolbar
3) One option is to enter the new values in global fields and your button will then create a new record and set the real fields with what is in the global fields.
If I don't want to hide/lock the toolbar, is there any other ways?