ul.form li input[type=submit]{background-image:url(img/but_entrar.png);}
input[type=submit].butSair{background-image:url(img/but_sair.png);}
.barraTopo{background-image:url(img/barra.png); background-repeat:repeat-x;}
.barraTopoGrupoSaga{background-image:url(img/barra.png); background-repeat:repeat-x;}
.cadeado{background-image:url(img/areaRestrita.png);}