function ClickMenu(menuParentId,menuChildsId) {
  var menuParent = document.getElementById(menuParentId);
  var menuChilds = document.getElementById(menuChildsId);
  if (menuParent.className == 'LeftMenu_Expanded') {
    menuParent.className = 'LeftMenu_Collapsed';
    menuChilds.style.display='none';
  } else {
    menuParent.className = 'LeftMenu_Expanded';
    menuChilds.style.display='block';
  }
}