function getHrefVal(str){
	var val = str.substring(str.lastIndexOf("#")+1, str.length);
	return val;
}
function show(id){
	document.getElementById([id]).style.display = "block";
}
function hide(id){
	document.getElementById([id]).style.display = "none";
}
function select(id){
	var links = document.getElementById(["menu"]).getElementsByTagName("a");
	for(var i=0; i<links.length; i++){
		var id_ = getHrefVal(links[i].href);
		hide(id_);
	}
	show(id);
}
function focusButton(id){
	var links = document.getElementById(["menu"]).getElementsByTagName("a");
	for(var i=0; i<links.length; i++){
		links[i].style.color = "white";
		//links[i].style.textDecoration = "none";
	}
	target = document.getElementById([id]);
	target.style.color = "#d5ea6f";
	//target.style.textDecoration = "underline";
}

var links = document.getElementById(["menu"]).getElementsByTagName("a");

for(var i=0; i<links.length; i++){
	links[i].onclick = function(e){
		if (!e) var e = window.event;
		if (e.target) target = e.target;
		else if (e.srcElement) target = e.srcElement;
		if (target.nodeType == 3) target = target.parentNode; //Zapobiega błędowi w SAFARI
		var id = getHrefVal(target.href);
		focusButton(target.id);
		select(id);
		return false;	//Zapobiega wywołaniu domyślnej akcji dla href
	};
}