Hello,
my webiste is linukas.nkk.lt, and i have a problem. When i open the page with video, ask me for install adobe flash player, i install that, and when back too same page, she ask the same  :-

And appers a text: " /> replacetag_0_1_end
" wmode="" quality="high" menu="false" pluginspage="www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="0" height="0">

to verify if this a problem from your system, try using another computer
if this is a problem due to flash player, try to uninstall all that has to do with flash player (plugin, player) everything go to c:\windows\downloaded program files\ and delete it from there, also google about unregistering flash from registry, then, try to install it again, this might help.