ejecting and inserting default ISO

[diddy81]

hello everyone
I'm new here i have the latest build and a nand dump of my wii
and Ive got to say great work at emulating the system menu

now to my question if i name a ISO in the default ISO box then load the wii menu it loads in the disk channel great
but is there a key map that will allow me to eject that disk so the channel will look like theres no disk inserted
and the a key to reinsert said ISO to load the banner again

if anyone know this it would be a big help to me

cheers