var id_menu = new Array('sub1','sub2','sub3','sub4','sub5','sub6','sub7','sub8','sub9','sub10','sub11','sub12','sub13','sub14','sub15');
function allclose() {
 for (i=0; i < id_menu.length; i++){
  document.getElementById(id_menu[i]).style.display = "none";
 }
}
function openMenu(id){
 for (i=0; i < id_menu.length; i++){
  if (id != id_menu[i]){
   document.getElementById(id_menu[i]).style.display = "none";
  }
 }
 if (document.getElementById(id).style.display == "block"){
  document.getElementById(id).style.display = "none";
 }else{
  document.getElementById(id).style.display = "block";
 }
}

sfHover = function() {
	var sfEls = document.getElementById("nave").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);