Animate IPO curve boundaries -how?

I was curious…
Can you modify and animate the X and Y values (min and max) of ipo curves, using driver objects or any other method?

Thanks for viewing! :smiley:
Maybe I should be more clear : it is the same like scaling the IPO curve along X or Y, or both, but with object transformation control. I think this will be good for speeding up or slowing down the animation (scale X) or exaggerating or making the animation more subtle.