dumb safari problem

Does anyone know if it's possible to edit the behaviour of Safari vis-a-vis the way it displays images that are larger than the browser window? I feel a bit dumb for asking, but I haven't been able to find anything on this.

I don't really want Safari to shrink the images down to fit the window, but there doesn't seem to be a toggle to turn it off that I can see. When you are viewing a hundred images, clicking on the magnifying glass can get tedious.

(Using Safari 3.0.4 on OS-X 10.5.1)

PS - Apologies if this is in the wrong forum. It's not totally clear if Safari is part of the OS or a separate application. Mods please just move the post if I guessed wrong.