Size of tab

Please, how can I show a swf file with its real size in a tab?
In this page http://www.mieprove.com/meteo_dolomiti tab2 and tab3 has the same content.
The tab2 content is:
embed src=”/swf/meteo.swf” width=”600″ height=”500″ /
but the swf file is too small.
How to show the real size?
As you see, I tried in the tab3 but is not the right way.