onload = function init() {
	initNavigation('mainMenuContainer');
}

function initNavigation(strId) {
	var objMenu = document.getElementById(strId);
	var arrLIchilds = objMenu.getElementsByTagName('li');

	for(var i=0; i<arrLIchilds.length; i++) {
		if(arrLIchilds[i].nodeName=="LI") {
			arrLIchilds[i].onmouseover = openSubmenu;
			arrLIchilds[i].onmouseout = closeSubmenu;
		}
	}
	
	
}

function openSubmenu() 
{
	this.className += ' over';
}

function closeSubmenu()
{
	if (this.className.indexOf('currentParent') != -1)
	{
		this.className = 'currentParent';
	}
	else
	{
		if (this.className.indexOf('current') != -1)
		{
			this.className = 'current';
		}
		else
		{
			this.className = '';
		}
	}
}