function displayMenu(id) {

	var d = document.getElementById(id);

	var temp;

	for (var i = 0; i<=12; i++) if (temp = document.getElementById('smenu'+i)) temp.style.display='none';

	if (d) d.style.display='block';
}

function displayMenuPanel(idCategory) {

	var element = document.getElementById(idCategory);

	var temp;

	for (var i = 0; i<=12; i++) if (temp = document.getElementById('panelCategory'+i)) temp.style.display='none';
	
	element.style.display = "block";
}