help moving sprite

[Guest_imported]

im trying to get a sprite to move left and right, up and down using the keyboard. right now im using a script

on keydown
if keypressed(123) then sprite(5).loch = sprite(5).loch -5
if keypressed(124) then sprite(5).loch = sprite(5).loch +5
end if

This works fine for moving the sprite left and right, what do i need to do to get this thing moving up and down?

 

[Horrid]

same thing just for locv

if keypressed(x) then sprite(5).locv = sprite(5).locV -5

 

[macpc]

How to increase the number of sprites (layers in Flash) from the default maximum of 150 to more.