Embedding troubles

I have a flash site that is jumping when loading an external swf into the main swf.

I’m looking at it on firefox on mac.

http://www.hotsource.eu/upload and click on one of the sign post buttons, the swf jumps down.

I know that the problem is caused by the way it is being embedded into the page, if I look at the swf directly in the browser there is no jumping.

I have tried embedding with and without swffit (http://swffit.millermedeiros.com/)

http://www.hotsource.eu/upload/main.swf

but when it is embedded into the html page then it jumps.

I want the site to be 100% x 100%

the jumping stops if I turn off

<param name=“SCALE” value=“noborder” />

but then I get the area outside of the stage showing

any help most appreciated!!!