You can't if you have deoxys showing, but jirachi and deoxys don't show on the normal pokedex unless you caught one.
To complete hoenn pokedex you do not need JIRACHI & DEOXYS at all.you can't get all Pokemon on Pokemon emerald so TRADE or CHEAT !!
No.
Cheating
Trade from Pokemon colosseum
find it.
There is no jirachi's cave.
Jirachi is a distrubtion pokemon that is not obtainable anymore unless by trading or cheating (gameshark)
you need Pokemon channel for gamecube and you get Jirachi as a bonus.
I assume you mean jirachi. Jirachi is an event pokemon and is no longer obtainable in the U.S. through any means other than hacking.
you can only get jirachi by a special event, which is obviously long gone now.
you have to have a chode
i think you can only catch it in Pokemon emerald.