Please help me make this Priest macro shorter

[Elvenbane-veknilash (Elvenbane)]

@Elvenbane-veknilash

Basic Help/Harm Macro

This will cast one spell when mousing over or targeting a friend and another when mousing over or targeting an enemy.

#showtooltip
/cast [mod:alt,@player] [@mouseover,help,nodead] HELP_SPELL; [@mouseover,harm,nodead] [harm] HARM_SPELL; HELP_SPELL

#showtooltip
/cast [mod:alt,@player] [@mouseover,help,nodead] Power Word: Shield; [@mouseover,harm,nodead] [harm] Shadow Word: Pain; Power Word: Shield