/* Menu functionaliteiten */

function showMenu(item) {
	// Verberg
	hideAll();
	// Toon
	document.getElementById("li_" + item).getElementsByTagName('a')[0].className = 'selected';
	document.getElementById("sub_" + item).style.display = 'inline';
}

function hideAll() {
	/* Hoofdmenu */
	var menuitems = document.getElementById('hoofdmenu').getElementsByTagName('li');
	for(i = 0; i < menuitems.length; i++) {
		menuitems[i].getElementsByTagName('a')[0].className = '';
	}

	/* Submenu */	
	var submenuitems = document.getElementById('submenu').getElementsByTagName('ul');
	for(i = 0; i < submenuitems.length; i++) {
		submenuitems[i].style.display='none';
	}
}