Du kan sætte både height og width til 100% i html koden;
<HTML>
<HEAD>
<meta http-equiv=Content-Type content="text/html; charset=utf-8">
<TITLE>vejers</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- URL's used in the movie-->
<!-- text used in the movie-->
<!--Press to see photo
Red = OutsideBlack = Inside--><OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
codebase="
http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"
WIDTH="100%" HEIGHT="100%" id="vejers" ALIGN="">
<PARAM NAME=movie VALUE="vejers.swf"> <PARAM NAME=quality VALUE=high> <PARAM NAME=bgcolor VALUE=#FFFFFF> <EMBED src="vejers.swf" quality=high bgcolor=#FFFFFF WIDTH="557" HEIGHT="570" NAME="vejers" ALIGN=""
TYPE="application/x-shockwave-flash" PLUGINSPAGE="
http://www.macromedia.com/go/getflashplayer">
</OBJECT>
</BODY>
</HTML>
Kristian