// JavaScript Document

function expandeOrCollpase(nomeElemento)
{
  var submenu = new Array("ToolsSubMenu","TeachingSubMenu");

	var mydiv = document.getElementById(nomeElemento);

  if (mydiv.style.display == "block")
    mydiv.style.display = "none";
  else
    mydiv.style.display = "block";
    
  for(i=0; i<submenu.length; i++)
  {
    if (submenu[i] != nomeElemento)
      document.getElementById(submenu[i]).style.display = "none";
  }  
}