I have to problems with a menu. that i am developing in rubyonrails

how could I make that and action (webpage) trigger the active button. and stay active, it normal and hover but doesnot trigger the active state.

how i can set css label inside rubyonrails method link_to
this is that i want. developed with a css application
<div class="boton"><a href="/empresa/empresa" id="linkempresa"><span>Empresa</span></a></div>

however when use the method link_to in RoR
<%= link_to "Empresa" , :action => "empresa" %>
it appears without <span></span> that i need in order to apply css to that buttons
<div class="boton"><a href="/empresa/empresa" id="linkempresa">Empresa</a></div>

help is much appreciated