<%= form('theme', context)%>
<%= a('theme', { 'theme'=> @theme.prev_theme(@curr) }, context) %>Prev</a>
<%= a('theme', { 'theme'=> @theme.next_theme(@curr) }, context) %>Next</a>
<select name='theme' onchange="this.form.submit()">
<%
  @theme.theme_list.each do |name|
    selected = (name == @curr) ? "selected" : ""
    %><option <%=selected%> value="<%=h(name)%>"><%=h(name)%></option><%
  end
%>
</select>
</form>
