function porte_plume_insert_head_css($flux) {
	$css = find_in_path('css/barre_outils.css');
	$css_icones = generer_url_public('barre_outils_icones.css');
	$flux .= "<link rel='stylesheet' type='text/css' media='all' href='$css' />\n"
		.   "<link rel='stylesheet' type='text/css' media='all' href='$css_icones' />\n";
	return $flux;
}