Imagine this is a game canvas. Drag up to move a player on the game board. You don't expect anything to scroll.
this is a chat log - fling me.
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
foo
whoops, I have some extra crap at the bottom of my page, normally unreachable