A:link       {COLOR: #000090; TEXT-DECORATION: underline }
A:visited    {COLOR: #000090; TEXT-DECORATION: underline }
a:active     {COLOR: #000090; TEXT-DECORATION: underline }
A:hover      {COLOR: #FF0000; TEXT-DECORATION: underline }
p            { font-family: Verdana; font-size: 10pt; }
li           { font-family: Verdana; font-size: 10pt; }
ul           { font-family: Verdana; font-size: 10pt; }
td           { font-family: Verdana; font-size: 10pt; }

#sidebar{width:100px; margin:0 0 0px 0; padding:1px 0 0 0;}

.principal{background-image:url('./images/boton_principal.gif');}
.historia{background-image:url('./images/boton_historia.gif');}
.personal{background-image:url('./images/boton_personal.gif');}
.examenes{background-image:url('./images/boton_examenes.gif');}
.tecnologia{background-image:url('./images/boton_tecnologia.gif');}
.movil{background-image:url('./images/boton_movil.gif');}
.eventos{background-image:url('./images/boton_eventos.gif');}
.otros{background-image:url('./images/boton_otros.gif');}
.contacto{background-image:url('./images/boton_contacto.gif');}
.calidad{background-image:url('./images/boton_calidad.gif');}
#menu a:active{float: left; width: 100px; height: 23px; margin-bottom:2px; background-position: top left;}
#menu a:visited{float: left; width: 100px; height: 23px; margin-bottom:2px; background-position: top left;}
#menu a:link{float: left; width: 100px; height: 23px; margin-bottom:2px; background-position: top left;}
#menu a:hover{background-position: 100px;}