Help needed!

I’m working on my personal portfolio site and desperately need help with some AS3. my knowledge about AS3 is very rudimentary. Hope anyone who’s kind to help be a bit more specific. Ok here is my struggle - I want to change the pointer cursor to custom movieclip when mouseover different invisible buttons. These buttons are mainly forward & backward button for my gallery. I got some help from other site but still unsolved. Please take a look at my fla attachment to point out what’s wrong with the coding. To elaborate a little bit more as what I wish to achieve you can take a look at the sample URL:

I just need the pointer cursor to turn to custom mc when it mouseover the hit area of the respective buttons

Will be really appreciated if anyone can help and many thanks in advance.;(