i have inserted image in the screen persona in the main menu in RFUI screen where is getting rolled over to the next Menu screen. Any way we can disable this or does it need any CSS scripting performed ?
The "next menu screen" is probably the same screen, since the RFUI application changes the screen dynamically, and while the menu looks different, technically speaking the screen didn't change so the assigned background image will still be the same.
If you don't want that, you could use some scripting to change the background picture, depending on what buttons are on the screen or what was pressed beforehand. Depending on your scenario, this may get a little tricky though if you have multiple menus where you want a different background image.