I made the buttons to use for my internet timeline.

I made the button using the Select tool and the Paint Bucket. I feathered the edges of the selection box to give the button its rounded edges.

To give the button its metal look edge, I added an Inner Bevel with a Hard Chisel edge to give it the pointed frame look.

To make the buttons look lit up, I used Inner and Outer Glow on the inner coloured square.