Video wont show, DIV layout Options

[Tomates]

So im trying to put a youtube video on a DIV layout i made.
However when i add the video it makes my layout completely dissapear including the video itself.
How do i get that to not happen?

Is there something special i need to add or do?

[silent-rebirth]

CODE

<div style="position:absolute; top:500px; left:50%; margin-left:-500px;">put video code here</div>

found this code on this question. http://www.createblog.com/forums/index.php?showtopic=206368

[Tomates]

CODE

<div style="position:absolute; top:500px; left:50%; margin-left:-500px;">put video code here</div>

found this code on this question. http://www.createblog.com/forums/index.php?showtopic=206368

didnt work.

EDIT: This is what it looks like after i press save and such.
Though it wont show up on the layout
BUT the layout itself reappeard. The video hasnt though

CODE

<div style="position:absolute; top:320px; left:50%; margin-left:200px;"><object type="application/x-shockwave-flash" allowScriptAccess="never" allowNetworking="internal" height="244" width="325" data="http://www.youtube.com/v/5O9dZF2q6R8&hl=en&fs=1">
<param name="allowScriptAccess" value="never" />
<param name="allowNetworking" value="internal" />
<param name="movie" value="http://www.youtube.com/v/5O9dZF2q6R8&hl=en&fs=1" />
</object></div>