Must Remember not to hit F10....

This little zebra spider always appears mid-morning while I'm working on my computer, lowering itself down from the desk lamp and making lively jumps across the keyboard. All the time that it sticks to the dusty keys that I don't use much, like F10, it'll be safe. I presume it's the same one that I photographed on the window ledge back in January, although it has certainly grown a bit since then.