Milonic JavaScript Menu

i got error: IframeId not defined.
i changed the id of the iframe exactly as the example.
so it have to work
not knowing what to do know

:?: :?: :?:
hi, i'm a very newbie.
I searched arround the forums for my answer, but not really satisfied
i want some help to target a iframe, called internal.

at the example page these code is placed on.
function openIFrame(iframeId, winURL){
ifId=gmobj(iFrameId)
ifId.src=winURL
}
my qeustion ...