function expand(s, divname)
{
  var td = s;
  var d = document.getElementById(divname);
  td.className = "navHover";
  d.className = "menuHover";
}

function collapse(s, divname)
{
  
 var td = s;
  var d = document.getElementById(divname);
  td.className = "navHide";
  d.className = "menuHide";
 
 }