var ddmenuitem	= 0;
var menuitem = 0;

function menuopen(id) {
	menubutton = document.getElementById('button_'+id);
	menuinhoud = document.getElementById('submenu_'+id);
	
	menubutton.className = 'active';
	menuinhoud.style.display = 'block';
	
	document.onclick = menuclose;
}

function menuclose() {
	menubutton.className = '';
	menuinhoud.style.display = 'none';
}