Opposite of currentTarget

Hello all!

On my screen are tiles generated from an array. I have a mouse roll over function that basically adds a movieclip which highlights the edge of the tiles(Frame 1 of that MC) and a mouse click function that makes the edges glow(Frame 2 of that MC). What I want to do is when click a tile, it will glow, then click on a different tile, and make the second tile glow, but not the first tile anymore.

Since the tiles are generated, I have event.currentTarget, but I feel that whatever I do, it will only affect the tile I click. Just wondering if there was a way to check if a tile isn’t the currentTarget, and then do something otherwise. I can post my code if needed.