#nav ul { left: 0px; top: 0px; display: block; }
#nav li { list-style-type: none; display: inline;margin-left:0px; }
#nav a { display: block; float: left; background: url(../img/btn-nav.gif); height: 29px; text-indent: -9999px;  }

#nav a#nav-inicio { width: 75px; background-position: 0px top; }
#nav a#nav-ventajas { width: 137px; background-position: -75px top; }
#nav a#nav-test { width: 106px; background-position: -212px top; }
#nav a#nav-regalos { width: 78px; background-position: -318px top; }
#nav a#nav-testimonios { width: 102px; background-position: -396px top; }
#nav a#nav-precios { width: 151px; background-position: -498px top; }
#nav a#nav-register { width: 125px; background-position: -649px top; }

#nav a:hover#nav-inicio, #nav a.active#nav-inicio { background-position: 0px -58px; }
#nav a:hover#nav-ventajas, #nav a.active#nav-ventajas { background-position: -75px -58px; }
#nav a:hover#nav-test, #nav a.active#nav-test { background-position: -212px -58px; }
#nav a:hover#nav-regalos, #nav a.active#nav-regalos { background-position: -318px -58px; }
#nav a:hover#nav-testimonios, #nav a.active#nav-testimonios { background-position: -396px -58px; }
#nav a:hover#nav-precios, #nav a.active#nav-precios { background-position: -498px -58px; }
#nav a:hover#nav-register, #nav a.active#nav-register { background-position: -649px -58px; }

#nav a:active#nav-inicio { background-position: 0px -58px; }
#nav a:active#nav-ventajas { background-position: -75px -58px; }
#nav a:active#nav-test { background-position: -212px -58px; }
#nav a:active#nav-regalos { background-position: -318px -58px;}
#nav a:active#nav-testimonios {  background-position: -396px -58px; }
#nav a:active#nav-precios {background-position: -498px -58px;}
#nav a:active#nav-register {background-position: -649px -58px; }