function closeAllMenuItems(){
	var divs=document.getElementsByTagName('div')
	for(var i=0; i<divs.length; i++)
		divs[i].style.display='none';
}
function menuClicked(element){
	var div=document.getElementById(element);
	if(div.style.display=='none'){
		div.style.display='block';
	}else{
		div.style.display='none';
	}
	return;
}
function openMenuItem(element){
	var div=document.getElementById(element);
	div.style.display='block';
}