function goto (url) {
	location.href = url;
}
function toggle (id) {
	var elem = document.getElementById(id);
	if (elem.style.display == "none")
		elem.style.display = "block";
	else
		elem.style.display = "none";
}

function toggleDisplay (id) {
	var elem = document.getElementById(id);
	if (elem.style.display == "none")
		elem.style.display = "block";
	else 
		elem.style.display = "none";
}

function makeInvisible (id) {
	var elem = document.getElementById(id);
	elem.style.display = "none";
}
function makeVisible (id) {
	var elem = document.getElementById(id);
	elem.style.display = "block";
	elem.style.zIndex = '5';
}
function show (id) {
	var elem = document.getElementById(id);
	showElem(elem);
}
function showElem(elem) {
	elem.style.display = "block";
}

function hide (id) {
	var elem = document.getElementById(id);
	hideElem(elem);
}
function hideElem (elem) {
	elem.style.display = "none";
}