function mover_marca(m_v,m_h){
	document.getElementById(m_v).style.visibility="visible";
	document.getElementById(m_h).style.visibility="hidden";
}
function rest_marca(m_v,m_h){
	document.getElementById(m_v).style.visibility="hidden";
	document.getElementById(m_h).style.visibility="visible";
}
function ir(pag){
	location.href = pag;
}