full html not working

I am new to Drupal so I might do something wrong here.

Here is my problem:
I am trying to enter a Flash detection script. For that I am using the online generator http://www.bobbyvandersluis.com/swfobject/generator/index.html
So in the editor in source mode with full html check I am entering the following:

		<div class="rtecenter">
			<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="860" height="980" id="myFlashContent">
				<param name="movie" value="http://bernardrodrigue.com/Galeries/slideshow45.swf" />
				<param name="play" value="true" />
				<param name="loop" value="true" />
				<param name="menu" value="true" />
				<!--[if !IE]>-->
				<object type="application/x-shockwave-flash" data="http://bernardrodrigue.com/Galeries/slideshow45.swf" width="860" height="980">
					<param name="play" value="true" />
					<param name="loop" value="true" />
					<param name="menu" value="true" />
				<!--<![endif]-->
					<a href="http://www.adobe.com/go/getflashplayer">
						<img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" />
					</a>
				<!--[if !IE]>-->
				</object>
				<!--<![endif]-->
			

and for some reason the <!--[if !IE]>--> and <!--<![endif]--> tags are messed up and appear to the user.

Any idea what is wrong?
Thanks