//By Strino
function menuON(id_menu, id_non1, id_non2, id_non3){
	//alert(id_menu + id_non1 + id_non2 + id_non3);
	document.getElementById(id_menu).style.display="block";
	document.getElementById(id_non1).style.display="none";
  	document.getElementById(id_non2).style.display="none";
  	document.getElementById(id_non3).style.display="none";
}