function a() {
	document.getElementById("a").style.display = "block";
	document.getElementById("b").style.display = "none";
	document.getElementById("c").style.display = "none";
	document.getElementById("d").style.display = "none";
	document.getElementById("e").style.display = "none";
	document.getElementById("f").style.display = "none";
	document.getElementById("l1").style.backgroundColor="lightblue";
	document.getElementById("l2").style.backgroundColor="#c0c0c0";
	document.getElementById("l3").style.backgroundColor="#c0c0c0";
	document.getElementById("l4").style.backgroundColor="#c0c0c0";
	document.getElementById("l5").style.backgroundColor="#c0c0c0";
	document.getElementById("l6").style.backgroundColor="#c0c0c0";
} 

function b() {
	document.getElementById("a").style.display = "none";
	document.getElementById("b").style.display = "block";
	document.getElementById("c").style.display = "none";
	document.getElementById("d").style.display = "none";
	document.getElementById("e").style.display = "none";
	document.getElementById("f").style.display = "none";
	document.getElementById("l1").style.backgroundColor="#c0c0c0";
	document.getElementById("l2").style.backgroundColor="lightblue";
	document.getElementById("l3").style.backgroundColor="#c0c0c0";
	document.getElementById("l4").style.backgroundColor="#c0c0c0";
	document.getElementById("l5").style.backgroundColor="#c0c0c0";
	document.getElementById("l6").style.backgroundColor="#c0c0c0";
} 

function c() {
	document.getElementById("a").style.display = "none";
	document.getElementById("b").style.display = "none";
	document.getElementById("c").style.display = "block";
	document.getElementById("d").style.display = "none";
	document.getElementById("e").style.display = "none";
	document.getElementById("f").style.display = "none";
	document.getElementById("l1").style.backgroundColor="#c0c0c0";
	document.getElementById("l2").style.backgroundColor="#c0c0c0";
	document.getElementById("l3").style.backgroundColor="lightblue";
	document.getElementById("l4").style.backgroundColor="#c0c0c0";
	document.getElementById("l5").style.backgroundColor="#c0c0c0";
	document.getElementById("l6").style.backgroundColor="#c0c0c0";
} 

function d() {
	document.getElementById("a").style.display = "none";
	document.getElementById("b").style.display = "none";
	document.getElementById("c").style.display = "none";
	document.getElementById("d").style.display = "block";
	document.getElementById("e").style.display = "none";
	document.getElementById("f").style.display = "none";
	document.getElementById("l1").style.backgroundColor="#c0c0c0";
	document.getElementById("l2").style.backgroundColor="#c0c0c0";
	document.getElementById("l3").style.backgroundColor="#c0c0c0";
	document.getElementById("l4").style.backgroundColor="lightblue";
	document.getElementById("l5").style.backgroundColor="#c0c0c0";
	document.getElementById("l6").style.backgroundColor="#c0c0c0";
} 

function e() {
	document.getElementById("a").style.display = "none";
	document.getElementById("b").style.display = "none";
	document.getElementById("c").style.display = "none";
	document.getElementById("d").style.display = "none";
	document.getElementById("e").style.display = "block";
	document.getElementById("f").style.display = "none";
	document.getElementById("l1").style.backgroundColor="#c0c0c0";
	document.getElementById("l2").style.backgroundColor="#c0c0c0";
	document.getElementById("l3").style.backgroundColor="#c0c0c0";
	document.getElementById("l4").style.backgroundColor="#c0c0c0";
	document.getElementById("l5").style.backgroundColor="lightblue";
	document.getElementById("l6").style.backgroundColor="#c0c0c0";
}

function f() {
	document.getElementById("a").style.display = "none";
	document.getElementById("b").style.display = "none";
	document.getElementById("c").style.display = "none";
	document.getElementById("d").style.display = "none";
	document.getElementById("e").style.display = "none";
	document.getElementById("f").style.display = "block";
	document.getElementById("l1").style.backgroundColor="#c0c0c0";
	document.getElementById("l2").style.backgroundColor="#c0c0c0";
	document.getElementById("l3").style.backgroundColor="#c0c0c0";
	document.getElementById("l4").style.backgroundColor="#c0c0c0";
	document.getElementById("l5").style.backgroundColor="#c0c0c0";
	document.getElementById("l6").style.backgroundColor="lightblue";
}