Code:
  


  <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%" ALIGN="">
    <PARAM NAME=movie VALUE="show_fotos.swf">
    <PARAM NAME=quality VALUE=high>
    <PARAM NAME=bgcolor VALUE=#FFFFFF>
    <param name="flashVars" value="var=test">
    <EMBED src="show_fotos.swf" FlashVars="var=test" WIDTH="100%" HEIGHT="100%" ALIGN="" quality=high bgcolor=#FFFFFF></EMBED> </OBJECT>

comment:

PARAM NAME for IE (<param name="flashVars" value="var=test">)
EMABED for NetScape (FlashVars="var=test")

use two for more integration in both browsers