Testing WebKit 3d scaling

scaleX and scaleY seem to work correctly across Safari, Chrome and WebKit nightly. scaleZ doesn't seem to work on any of them??? (Can't find any online examples...) I even tried making the scaling a px value, which worked on translate in Safari. (Not that a scaling factor in pixels makes any sense to me, but you never know...)
References:

Click this to toggle the X/Y/Z section visibility

Debug text appears here
Regular DIV
scaleX=-5
scaleX=-4
scaleX=-3
scaleX=-2
scaleX=-1
scaleX=0
scaleX=1
scaleX=2
scaleX=3
scaleX=4
scaleX=5
x