Fixed menu problems

Hello I’m having a question, I’m creating an application, and I’m in trouble and I’m not able to think of something that solves my problem. in the home I’ll add several items that when clicking will open in an external URL, however I want it to open within the application, but I realized that when I create a web viewer and click on some item that is in the home to open the web wiewer, soon appears to me an option in the menus that are created, because the web viewer is a screen Please need a help with this. I want you to open the web viewer, but without appearing in the menus this screen chosen. Thank you right now.

When you need help, you give more information to us.
Something like Screenshot or Blocks.