I am using a vertical side-navigation menu with drop-down buttons. Since I prefer users to be able to work on several menu/sub-menu options simultaneously, I set up each button press to generate a corresponding screen in its own tab by using target=”_blank”… Furthermore, for the sake of uniformity and efficiency, I’d like to avoid having to go back to Home screen for each additional menu option activation, which is why I plan to repeat displaying the same Home screen menu in the code for each of the launched tabs. My problem: I also want to prevent re-launching menu/sub-menu functions that have already been activated in their own tabs. While showing the menu in its original form, this would probably require disabling the menu/sub-menu items that have already been activated.