HTML {
	FONT-SIZE: 86%
}
body {
	FONT-SIZE: 86%
}
#medio a {background:url(images/A_m_on.gif) no-repeat bottom;}
#medio a:active {background:url(images/A_m_on.gif) no-repeat bottom;}
.active#medio A {background:url(images/A_m_on.gif) no-repeat bottom;}