[Moo] Fx difference between MooTools 1.2 and 1.4

[mooyah]

Does anyone know why this fiddle works correctly with mootools 1.2 but not 
with the latest and greatest 1.4? Clicking the change text links should 
make the number "scroll" up to the appropriate number.

http://jsfiddle.net/5VGKN/11/ 

TYIA!