function mToggle(e) {
 var t, s, i;
 if (!e) var e = window.event;
 if (e.target) t = e.target;
 else if (e.srcElement) t = e.srcElement;
 s=t.parentNode.getElementsByTagName('li');
 for (i=0;i<s.length;i++)
  s[i].style.display=(s[i].style.display == "none" ? "inline" : "none");
}

function mInit(m) {
	if (document.getElementById && document.createElement) {
	        m = document.getElementById(m).getElementsByTagName('li');
	        var d, s, i, j;
	        for (i = 0; i < m.length; i++) {
	        	s=m[i].getElementsByTagName('li');
			if (s.length) {
	        		m[i].onclick=mToggle;
	        		for (j = 0; j < s.length; j++)
					if (m[i].id != 'menuopen')
						s[j].style.display="none";
			}
	        }
	}
}
function mInitMenu() {
	mInit('menu');
}

if (window.addEventListener){
  window.addEventListener("load", mInitMenu, true);
} else if (window.attachEvent) {
  window.attachEvent("onload", mInitMenu);
}