Animations can be created a variety of ways. What is the speed of the animation currently based on? What is moving? What propertyy or animation aspect would you be trying to slow down or speed up with the controls?
( ignore the anxious request to close the discussion below if the answer was missed )
If it's actionscript 3 you can dynamically adjust the frameRate on the timeline like so:
stage.frameRate += 1;
In fact even if its an as2 swf if it's just timeline tweens just change the animation swf to actionscript 3 and drop in your buttons and use that code I provided. Of course to slow it down use stage.frameRate -= 1;
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