var meni = null;

function menuOn(menuName){
	if (meni != null) {
		setClass(false, meni);
	}

	meni = document.getElementById(menuName);
	setClass(true, meni);
	void(0);
}

function menuOff(menuName){
	var meni = document.getElementById(menuName);
	setClass(false, meni);
	void(0);
}

function setClass(over, where) {
	var hoverStr = 'hover';

	if (over) {
		where.className = hoverStr;
	} else {
		where.className = '';
	}
}

function adaptLis() {
	var lis = "";
	lis = document.getElementById('mainMenu').getElementsByTagName('li');
	if (lis != "" && lis != undefined && lis != null) {
		for (i = 0; i < lis.length; i++) {
			li = lis[i];

			li.onmouseover = function() {
				setClass(true, this);
			}

			li.onmouseout = function() {
				setClass(false, this);
			}
		}
	}
}

window.onload = adaptLis;