for example :

 

<object codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,42,0" height="455" width="570" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000">
<param name="_cx" value="15081" />
<param name="_cy" value="12039" />
<param name="FlashVars" value="" />
<embed src="/portofinobozza8/upload/sentieri.swf" quality="high" bgcolor="" width="570px" height="455px" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" />
</object>

 

insert near width:

"align=left" or "align=center" or "align=right"