Since Mantis 716 has been fixed the navigation on homescreen is not working correctly if the preview window is active

h4. Steps to Reproduce
Homescreen - No preview Window (navigation is okay):
Case1: MainMenu is active -> press left -> Top Buttons selected
Case2: MainMenu is active -> press right -> Top Buttons selected

Homescreen - MyTV/MyVideo/vis in preview Window (navigation is wrong):
Case1:
       1.MainMenu is active
       2.press left
       3.preview Window is active
       4.press left
       5.top Buttons were selected
Case2:
       1.MainMenu is active
       2.press right
       3.preview Window is active
       4.press right
       5.MainMenu is active

h4. Additional Information
How it should work with preview Window active: (i-loops opinion)

Case1: Main Menu selected (base for following commands)
       1.up/down -> scrolling through menu
       2.left -> selects preview window
       3.right -> selects top buttons

Case2: preview window selected (base for following commands)
       1.up -> selects top buttons
       2.down -> no action
       3.left -> no action
       4.right -> Main Menu is selected