Page transition direction - help

Hi all

This is a very basic question indeed and I hope someone can help me.
I am trying to control page transition ( SLIDE DIRECTION ) effect via BUTTONS. ( Currently this can only be controlled via page properties! )

CONTROL VIA BUTTONS should be : ( Slide Effect )

RIGHT ------------- page slide direction from RIGHT to LEFT.
LEFT ------------- page slide direction from LEFT to RIGHT
BOTTOM --------- page slide direction from BOTTOM to TOP
TOP --------------- page slide direction from TOP to BOTTOM


Project example attached.

Can someone help me with this ?