div.fond
   {
   margin : 10px;
   text-align : justify;
   font-family: Verdana,Arial,Helvetica,sans-serif;
   background :url(http://baptiste.brand.free.fr/video1.jpg) no-repeat top center scroll ;);
   }


#menubar dl#mbSpecials dd{
display:none;
}
#menubar dl#mbSpecials:hover dd{
display:block;
} 

#menubar dl#mbMenu dd{
display:none;
}
#menubar dl#mbMenu:hover dd{
display:block;
}

#menubar dl#mbAMM_links dd{
display:none;
}
#menubar dl#mbAMM_links:hover dd{
display:block;
}

#menubar dl#mbCategories dd{
display:none;
}
#menubar dl#mbCategories:hover dd{
display:block;
}

#menubar dl#mbAdditionalPages dd{
display:none;
}
#menubar dl#mbAdditionalPages:hover dd{
display:block;
}

#menubar dl#mbAMM_personalised1 dd{
display:none;
}
#menubar dl#mbAMM_personalised1:hover dd{
display:block;
}

#stuffs_block_1 div.personal_block{
display:none;
}
#stuffs_block_1:hover div.personal_block{
display:block;
}
#stuffs_block_4 div.personal_block{
display:none;
}
#stuffs_block_4:hover div.personal_block{
display:block;
}

<script language="JavaScript">
//PLF-http://www.jejavascript.net/
function fenetreCent(url,nom,largeur,hauteur,options) {
var haut=(screen.height-hauteur)/2;
var Gauche=(screen.width-largeur)/2;
f=window.open(url,nom,"top="+haut+",left="+Gauche+",width="+largeur+",height="+hauteur+","+options);
self.focus();
}
</script>