dom.event.addEventListener(window, 'load', init);

function init() {
	var about = document.getElementById('about');
	dom.event.addEventListener(about, 'mouseover', dropDown);
	dom.event.addEventListener(about, 'mouseout', dropDefault);
}
function dropDown() {
	var about = document.getElementById('about');
	var dropDown = about.getElementsByTagName('UL').item(0);
	
	if(dropDown.className == 'dm') {
		dropDown.style.display = 'block';
	}
}
function dropDefault() {
	var about = document.getElementById('about');
	var dropDown = about.getElementsByTagName('UL').item(0);
	
	if(dropDown.className == 'dm') {
		dropDown.style.display = 'none';
	}
}