Flash :: Css - Showing A Large Amount Of HTML Alternative Content With Swfobject & Swffit Site

I have a full flash site which uses swfobject to embed it 100% height and width. I'm using swffit to force a browser scroll bar for pages with a large amount of content. This is all fine and works perfectly. I also have the content in HTML format, as alternative content and this also works apart from in order to get the flash swfobject to work I need to add the overflow = hidden in the CSS, like:

html{
height: 100%;
overflow:hidden;
}
#content{
height: 100%;