// function to expand menus

function expand(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);
  
  td.className = "menuHover";
  d.className = "menuHover";

}


// function to collapse menus

function collapse(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);
  
  td.className = "menuNormal";
  d.className = "menuNormal";

}