function display_copyright1() {
	document.getElementById('copyright1').style.display = "block";
}
function display_copyright2() {
	document.getElementById('copyright2').style.display = "block";
}
function hide_copyright1() {
	document.getElementById('copyright1').style.display = "none";
}
function hide_copyright2() {
	document.getElementById('copyright2').style.display = "none";
}

function display_mapCentralamerica() {
	document.getElementById('mapCentralamerica').style.display = "block";
}
function hide_mapCentralamerica() {
	document.getElementById('mapCentralamerica').style.display = "none";
}