document.write
(
'<div id="boite_index"><div class="centre"><form title="Pour fermer cette fenetre">'
+'<input class="bouton" type="button" onclick="javascript:montre_annonce()" value="Fermer"/>'
+'</form><br><div class="affiche_image_solo"><img alt="" src="annonce.jpg" title="news">'
+'</div></div></div>'
)