[asma khorma]

i am using windows 2003 windows xp
when i do mirror margin the inner and outer be opoist which means in my case
the left margin is 2.5 and the right is 3.5 but when make a mirror the oposit
happend where the left become 3.5 and right become 2.5
why this is happend?
kindly advise,
thanks