def meta_tags
    t=tags
    if t.length>0
        return %{<meta name="keywords" content="#{t}">}
    end
end

def meta_alternate
    res=[]
    @conf.languages.each do |lang|
        item_for_lang=item_of_language(lang)
        if not item_for_lang.nil?
            res <<= %{<link rel="alternate" lang="#{ lang }" xml:lang="#{ lang }" title="#{ item_for_lang[:title] }" type="text/html" hreflang="#{ lang }" href="#{ item_for_lang.reps[0].path }" />}
        end
    end
    return res.join("\n")
end