function toggleMe(a){
	var e = document.getElementById(a);
	var b1 = document.getElementById("nav1");
	var b2 = document.getElementById("nav2");
	var b3 = document.getElementById("nav3");
	var b4 = document.getElementById("nav4");
	if(!e)return true;
	if(a == "nav1"){
		b1.style.display = "block"
		b2.style.display = "none"
		b3.style.display = "none"
		b4.style.display = "none"
		return true;
	}
	if(a == "nav2"){
		b2.style.display = "block"
		b1.style.display = "none"
		b3.style.display = "none"
		b4.style.display = "none"
		return true;
	}
	if(a == "nav3"){
		b3.style.display = "block"
		b2.style.display = "none"
		b1.style.display = "none"
		b4.style.display = "none"
		return true;
	}
	if(a == "nav4"){
		b4.style.display = "block"
		b2.style.display = "none"
		b3.style.display = "none"
		b1.style.display = "none"
		return true;
	}
}