Transparency IFRAME

[Gerhard Auner]

Hello everybody,

is there someone who can tell me to make a  iFrame transparency for
"Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:0.9) Gecko/20010505"?

In IE5.5 this is possible with the <IFRAME allowTransparency="true"........
> and the BODY which is shown whitin this IFRAME must have the
backgroundcolor: transparent.

How can I realize this for Mozilla?

Gerhard Auner