function onMenu(idMenu) {
	var menu = document.getElementById(idMenu);
	menu.className = "on";
}

function offMenu(idMenu, selectedMenu) {
	var menu = document.getElementById(idMenu);
	if (idMenu != selectedMenu) {
		menu.className = "off";
	}
}

function changebloc(id, css) {
	document.getElementById('title'+id).className = "title"+css;
	document.getElementById('subtitle'+id).className = "subtitle"+css;
}

function changebloc2(id, css, img) {
	changebloc(id, css);
	// document.getElementById('img'+id).src = "images/" + img + '_' + css + '.png';
}