Is it possible to move a symbol in the same frame?

I have a mask over some buttons in a frame and I want to hide the mask on hover so that the buttons are visible.

EG: You hover over JOB OPPORTUNITIES and a submenu of buttons is revealed.

BUT when you hover over one of the other buttons on the page it will put it back in place to hide the buttons again.

I did have it so that on hover it would just jump to a new frame but then the page the person is viewing changes back to the main page with hidden buttons.