How to call a krpano action from iframe to main window?

Hi, please helpme:

How to call a krpano action from iframe to main window?

example iframe partial code:

<a href="#" onclick="testing();" >...testing</a>
(...)
function testing() {
krpano.call("showlog();");
}

I need to see the log inside the krpano stage. (not inside iframe window)

The final idea is to use iframe as menu for run krpano code in the parent page

Best rewards,

Fdo