function showEvents(eid) {
	if (eid == "ALL") {
		document.getElementById("tb_NC").className = "active";
		document.getElementById("tb_NE").className = "active";
		document.getElementById("tb_SC").className = "active";
		document.getElementById("tb_SE").className = "active";
		document.getElementById("tb_WE").className = "active";
	} else {
		hideEvents();
		document.getElementById("tb_" + eid).className = "active";
	}
}

function hideEvents() {
	document.getElementById("tb_NC").className = "";
	document.getElementById("tb_NE").className = "";
	document.getElementById("tb_SC").className = "";
	document.getElementById("tb_SE").className = "";
	document.getElementById("tb_WE").className = "";
}