body{
    overflow: hidden;
}

#contenedor{
	position: relative;
	display: block;
	margin: auto;
	width: 644px;
	height: 548px;
	border: 0px;
	overflow: hidden;
}
#contenedor.inicio{
    background: url('../img/inicio.jpg') no-repeat;
}
#contenedor.final{
    background: url('../img/final.jpg') no-repeat;
}

#previous,
#next{
    position: absolute;
    width: 135px;
    height: 40px;
    cursor: pointer;
    bottom: 0px;
}

#previous{
    background: url('../img/previous.png') no-repeat;
    left: 0px;
}
#previous:hover,#previous:active,#previous:focus{
    background: url('../img/previous_over.png') no-repeat;
}
#next{
    background: url('../img/next.png') no-repeat;
    right: 0px;
}
#next:hover,#next:active,#next:focus{
    background: url('../img/next_over.png') no-repeat;
}

#next.desactivado,
#previous.desactivado{
    opacity: 0.5;
    cursor: default;
}
#next:hover.desactivado,
#previous:hover.desactivado{
    opacity: 0.5;
    cursor: default;
}

#next:hover.desactivado{
    background-image: url('../img/next.png');
}

#previous:hover.desactivado{
    background-image: url('../img/previous.png');
}

.slowShow{
    -webkit-transition: opacity 1.5s; /* Safari */
    transition: opacity 1.5s;
}

.oculto{
    visibility: hidden;
    opacity : 0;
}
