function chClass(id, cls)
{
  div = document.getElementById(id);
  if(div)
  {
    div.className = cls;
  }
}


function ShowSubMenu(par,sub)
{
  subdiv = document.getElementById(sub);
  pardiv = document.getElementById(par);

  if(pardiv&&subdiv)
  { 
    subdiv.style.zIndex = "5";
    

    subdiv.style.display = "block";
  } 
}

function HideSubMenu(par,id)
{
  div = document.getElementById(id);
  if(div)
  { 
    div.style.display = "none";
  } 
}


function ShowSubMenuEx(par,sub)
{
  subdiv = document.getElementById(sub);
  pardiv = document.getElementById(par);

  if(pardiv&&subdiv)
  { 
    subdiv.style.zIndex = "5";
    pardiv.className = "sublinkon";

    subdiv.style.display = "block";
  } 
}

function HideSubMenuEx(par,sub)
{
  subdiv = document.getElementById(sub);
  pardiv = document.getElementById(par);
  if(pardiv&&subdiv)
  { 
    subdiv.style.display = "none";
    pardiv.className = "sublink";
  } 
}