menu{
bottom:0px;
height:37px;
position:absolute;
}

menu li{
float:left;
margin:0 12px;
}

<!-- PORTUGUÊS -->

menu .empresa{
width:68px;
height:37px;
background-image:url(../images-menu/pt/empresa-active.png)
}

menu .veiculos{
width:87px;
height:37px;
background-image:url(../images-menu/pt/veiculos-active.png)
}

menu .trabalhos{
width:177px;
height:37px;
background-image:url(../images-menu/pt/trabalhos-active.png)
}

menu .clientes{
width:66px;
height:37px;
background-image:url(../images-menu/pt/clientes-active.png)
}

menu .cotacoes{
width:74px;
height:37px;
background-image:url(../images-menu/pt/cotacoes-active.png)
}

menu .novidades{
width:81px;
height:37px;
background-image:url(../images-menu/pt/novidades-active.png)
}


<!-- INGLÊS -->

menu .empresa_en{
width:68px;
height:37px;
background-image:url(../images-menu/en/firm-active.png)
}

menu .vehicles{
width:75px;
height:37px;
background-image:url(../images-menu/en/vehicles-active.png)
}

menu .portfolio{
width:89px;
height:37px;
background-image:url(../images-menu/en/portfolio-active.png)
}

menu .customers{
width:97px;
height:37px;
background-image:url(../images-menu/en/customers-active.png)
}

menu .quotes{
width:65px;
height:37px;
background-image:url(../images-menu/en/quotes-active.png)
}

menu .news{
width:50px;
height:37px;
background-image:url(../images-menu/en/news-active.png)
}


<!-- ESPANHOL -->

menu .empresa_es{
width:68px;
height:37px;
background-image:url(../images-menu/es/empresa-active.png)
}

menu .vehiculos{
width:87px;
height:37px;
background-image:url(../images-menu/es/vehiculos-active.png)
}

menu .trabalhos_es{
width:80px;
height:37px;
background-image:url(../images-menu/es/trabajos-active.png)
}

menu .clientes_es{
width:66px;
height:37px;
background-image:url(../images-menu/es/clientes-active.png)
}

menu .cotazion{
width:78px;
height:37px;
background-image:url(../images-menu/es/cotazion-active.png)
}

menu .noticias_es{
width:72px;
height:37px;
background-image:url(../images-menu/es/noticias-active.png)
}