function initializeMenu(){
	$$('#mainNavList .mainLinks').addEvent('mouseover', function(){
		var element = "#" + this.id + " ul";
		$$(element).setStyle('display', 'block');
	});
	
	$$('#mainNavList .mainLinks').addEvent('mouseout', function(){
		var element = "#" + this.id + " ul";
		$$(element).setStyle('display', 'none');
	});
	
}