The following example tag shows that the quotes are missing for the object and embedd tag parameters:

<object classid=clsid:D27CDB6E-AE6D-11cf-96B8-444553540000 codebase=http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0 data=/download/attachments/20/test.swf type=application/x-shockwave-flash2-preview width=720 height=540 >
<param name='data' value='/download/attachments/20/test.swf'/>
<param name='loop' value='false'/>
<param name='menu' value='false'/>
<param name='movie' value='/download/attachments/20/test.swf'/>
<param name='quality' value='high'/>
<param name='scale' value='exactfit'/>
<param name='src' value='/download/attachments/20/test.swf'/>
<param name='type' value='application/x-shockwave-flash2-preview'/>
<embed pluginspage=http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash quality=high src=/download/attachments/20/test.swf type=application/x-shockwave-flash2-preview width=720|height=540 />
</object>