Pass jquery variables between iframe and parent in opera

this problem is solved here: Pass jquery variables between iframe and parent

Anyway, this wont work on opera. It's fine on firefox, but opera gives me this error:

Uncaught exception: ReferenceError: Security error: attempted to read protected variable

I need to pass variables between 开发者_JS百科iframe and parent and it's enough for me if this works only in recent major browsers releases.