window.onload = dropDown;

function dropDown() {
	if (!document.getElementsByTagName) return false;
	if (!document.getElementById) return false;
	var menu = document.getElementById("dropMenu");
	var teir1 = menu.getElementsByTagName("li");
	var teir2 = menu.getElementsByTagName("div");
	for ( var i=0; i < teir1.length; i++) {
		teir1[i].onmouseover = function () {
			if (this.childNodes[1]) {
				this.childNodes[1].style.display= 'block'}
			}
		teir1[i].onmouseout = function () {
			if (this.childNodes[1]) {
				this.childNodes[1].style.display= 'none'}
			}
		if (teir2[i]) {
		teir2[i].onmouseover = function () {
	this.style.display= 'block'}
		teir2[i].onmouseout = function () {
	this.style.display = 'none'}
		teir2[i].style.display = 'none';
		}
	}
}