function showHideMenu (id) {
  if(document.getElementById('almenu'+id).style.display=='none') {
    document.getElementById('almenu'+id).style.display='block';
    document.getElementById('nyil'+id).src='images/menu_fel.gif';
    document.getElementById('menuk').value=document.getElementById('menuk').value+'|'+id+'|';
  } else {
    document.getElementById('almenu'+id).style.display='none';
    document.getElementById('nyil'+id).src='images/menu_le.gif';
    document.getElementById('menuk').value=document.getElementById('menuk').value.replace('|'+id+'|','');
  }
}

function glueMenu(link) {
  var newlink='';
  for (i=0;i<link.href.split('&').length;i++) {
    if (link.href.split('&')[i].search('menu=')==-1) {
      newlink+=link.href.split('&')[i]+'&';
    }
  }
  var separator='';
  if (link.href.split('&').length>0) separator='&';
  else separator='?';
  newlink=newlink+separator+'menu='+document.getElementById('menuk').value;
  newlink=newlink.replace('&&','&');
  newlink=newlink.replace('??','?');
  link.href=newlink;

}

/*function restoreMenu() {
   menuk=document.getElementById('menuk').value.slice(1,document.getElementById('menuk').value.length-1);
   menuk=menuk.split('||');
   for (i=0;i<=menuk.length;i++) {
     document.getElementById('almenu'+menuk[i]).style.display='block';
   }
}*/