var topMenu = new Array();
var leftMenu = new Array();

function topMenuOpen(id, level) {
  topMenuClose(level);
  var submenu = document.getElementById('TopMenuBlock'+id);
  submenu.style.visibility = 'visible';
  topMenu[level]=id;
}

function topMenuClose(level) {
  for (i=level; i<5; i++) {
    if (topMenu[i]) {
      var submenu = document.getElementById('TopMenuBlock'+topMenu[i]);
      submenu.style.visibility = 'hidden';
      topMenu[i]=0;
    }
  }
}

function leftMenuOpen(id, level) {
  leftMenuClose(level);
  var submenu = document.getElementById('LeftMenuBlock'+id);
  submenu.style.visibility = 'visible';
  leftMenu[level]=id;
}

function leftMenuClose(level) {
  for (i=level; i<5; i++) {
    if (leftMenu[i]) {
      var submenu = document.getElementById('LeftMenuBlock'+leftMenu[i]);
      submenu.style.visibility = 'hidden';
      leftMenu[i]=0;
    }
  }
}