iframe opacity issues

[bill.onthebeach]

okay, figure this one out, o wise ones!

I have a iframe in a work-in-process. Everything is fine for a week. Then, yesterday, while I am working on the rest of the page, there appears to be an opacity screen laying on top of my iframe.

When you open the html file, everything is fine, if click on the iframe, it takes you to iframe fullscreen, when you return to previous page, there's the screen, (dark gray about 15%), and I see to how to remove it.

there are four iframes on the page, this is the only one that is installed. Needless to say, I don't need this problem.

I have 1000 lines of code, and no reference to opacity, filter, focus or anything that I could identify as remotely connected to the matter.

my code is simple:

#if1 {
position : fixed;
margin-top : -5px;
border-bottom : 3px solid #444444;
}

<iframe id="fbif" src="http://www.xxx.com" width="100%" height="65" frameborder="0" scrolling="no"></iframe>


I'm am running FF 3.6 on XP sp3, if it matters.

What say ye o wise ones?

thanks in advance,
bill.onthebeach

[simcomedia]

Me say it must be the source of the content that's coming into your iframe.

[bill.onthebeach]

that already occured to me since the source is fb.
any more ideas?

bill