Hy guys,I made my account work again but strangely just on my laptop

.
Anyways,I working on a really neat game of mine and I've got this interesting puzzle in my mind that's quite possible,but first I just need a little help whit the script from you guys.
I've made this picture that's gonna pop-up when your gonna press "F" near the computer monitor.To do this,I will have a small transparent square in front of the monitor and if you'll get near it a text will appear,saying that you have to press "F" to read.The square will have a script which will say,that if you press "F" when you are near it my picture will appear and when I go away it will disappear,[b]but when you'll get near the square again,you can still press "F" and the picture will show up.
Again thanks for any replys that will help make my upcoming game better
What you see isn't always real....