function initMenu () {
	document.getElementById("drop-link").onclick = function () {
		if(this.parentNode.className.indexOf("open") != -1) {
			this.parentNode.className = this.parentNode.className.replace("open", "");
		} else {
			this.parentNode.className += "open";
		}
	}
}
if (window.addEventListener) window.addEventListener("load", initMenu, false);
else if (window.attachEvent) window.attachEvent("onload", initMenu);