Displaying advert in sideblock

[hqlman]

I am trying to display a flash banner in a block on the cms but am having a small problem, when i use code 1 to display the banner, it appears fine in every browser except IE 8, not tried 7 and 6.

When i use code 2 then the banner appears in all browsers but in IE 8 everything on my forum gets center aligned, as seen in the pics below,

Can someone tell me the correct code to use so it works in all browsers.

CODE 1

<center><object classid="CLSID:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://active.macromedia.com/flash2/cabs/swflash.cab#version=8,0,0,0" width="160" height="600">
<param name="movie" value="css/Gaming160x600.swf">
<param name="quality" value="high">
<param name="FlashVars" value="refer=MYAYE">
<embed src="adverts/sen/Gaming160x600.swf" flashvars="refer=roskilde" quality="high" scale="exactfit" menu="false" bgcolor="#000000" swliveconnect="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/shockwave/download/downloadcgi?P1_Prod_Version=ShockwaveFlash" width="160" height="600">
</object></center>


CODE 2
<center><embed src="adverts/sen/Gaming160x600.swf" flashvars="refer=roskilde" quality="high" scale="exactfit" menu="false"
bgcolor="#000000" width="160" height="600" swliveconnect="false"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/shockwave/download/downloadcgi?P1_Prod_Version=ShockwaveFlash"> </embed></center>


Images showing forum centered:

http://i50.tinypic.com/153xsvp.jpg
http://i49.tinypic.com/359lmbr.jpg