centering the top banner???, flash banner needs to be page centered. Options

[shutterleftopen]

http://aspectappareltest.blogspot.com/

the link above is to a test blog i have set-up for a clothing company that i'm working on designing a layout for. what do i need to enter and where do i need to enter it in order for the flash banner at the top to be completely center with the page instead of starting at the blog language? i removed the endstart type coding to have it start at that and it still doesn't work..thanks in advance.

CODE

#header-wrapper {
   width:800px;
   margin:0px;
   position: center !important;
   }

CODE

<div id='header-wrapper'>
<object allowNetworking='internal' allowScriptAccess='never' border='0' data='http://www.aspect-photos.com/martianmovement/blogbanner-flash.swf' height='600' position='center' type='application/x-shockwave-flash' width='800'>
<param name='allowScriptAccess' value='never'/>
<param name='allowNetworking' value='internal'/>
<param name='movie' value='http://www.aspect-photos.com/martianmovement/blogbanner-flash.swf'/>
<param name='wmode' value='transparent'/>
</object>
     </div>

[shutterleftopen]

anybody at all? i've tried to find out why it will only be on the section of the width of content but when i remove it it still doesn't work...is there a code to override it?

[fixtatik]

position:center; isn't a CSS value. Just use margin:auto;