ul#nav {float: left; width: 567px;}
ul#nav li {float: left;}

ul#nav li.aempresa a {width: 79px; background-image: url(../i/mn_aempresa2.gif);}
ul#nav li.diferenciais a {width: 88px; background-image: url(../i/mn_diferenciais.gif);}
ul#nav li.servicos a {width: 66px; background-image: url(../i/mn_servicos.gif);}
ul#nav li.clientes a {width: 68px; background-image: url(../i/mn_clientes.gif);}
ul#nav li.faleconosco a {width: 111px; background-image: url(../i/mn_faleconosco2.gif);}
ul#nav li.incentivo a {width: 155px; background-image: url(../i/mn_incentivo.gif);}

ul#nav li a {float: left; height: 23px; text-decoration: none; text-indent: -5000px;}

ul#nav li a.selected {background-position: 0 -23px;}