I'm using the code
style="filter:alpha(opacity=30)"
to fade out my background...but when I put it in my main code it ends up fading out the whole page. Is there anyway I can change this, or am I just putting the code in the wrong place?

it's hard to say, since you haven't shown us where you're putting the code.

I don't think it's possible to fade out just the background with that code. It'll fade out the entire page that it's put on.

Where would you put the code to make the whole page fade? I want to do that but wherever I put it it doesn't work.