instanceof Array might be fail in some browsers when looking across frames.
instanceof Array might be fail in some browsers when looking across frames.

Fixing issue #9

Reported by silvangolega++
erpframework/joose-js,erpframework/joose-js,rzel/joose-js,rzel/joose-js,erpframework/joose-js,rzel/joose-js,erpframework/joose-js,rzel/joose-js