function clearForm(x) {
	var f = document.getElementById(x);
	for(var i = 0; i < f.elements.length; i++) {
		if (f.elements[i].type != 'submit' && f.elements[i].type != 'button') {
			f.elements[i].value = '';
		}
	}
}
function openSubMenu(p) {
	var items = document.getElementById("menu-bar").getElementsByTagName("div");
	for(i = 0; i < items.length; i++) {
		if (items[i].id != 'submenu-' + p) {
			items[i].style.display = 'none';	
		} else {
			items[i].style.display = 'block';		
		}
	}
}
function closeSubMenu() {
	var items = document.getElementById("menu-bar").getElementsByTagName("div");
	for(i = 0; i < items.length; i++) {
		items[i].style.display = 'none';	
	}
}