function onSub(s) {
	/* Open or close the selected */
	if(document.getElementById("sub_" + s).style.display == 'none') {
		openSub(s);
	} else {
		closeSub(s);
	}
	/* Close the rest
	for (i=1; i < 7; i++) {
		if(i != s) closeSub(i);
	} */
}
function closeSub(s) {
	document.getElementById("sub_" + s).style.display = 'none';
	document.getElementById("open_" + s).className = 'none';
}
function openSub(s) {
	document.getElementById("sub_" + s).style.display = 'block';
	document.getElementById("open_" + s).className = 'current';
}