function changeFod(obj)
{
     var p = obj.parentNode.parentNode.id;
     var plist = obj.parentNode.getElementsByTagName("h5");
     var info = p+"info";
     var fodinfo = document.getElementById(info).getElementsByTagName("span");

  for(i=0;i<plist.length;i++)
   {
    if(obj == plist[i])
   {
     plist[i].className = "s";
     fodinfo[i].className = "dis";
   }
    else
    {
     plist[i].className = "";
     fodinfo[i].className = "undis";
   }
   }
}
function changeNav(obj)
{
     var p = obj.parentNode.parentNode.id;
     var plist = obj.parentNode.getElementsByTagName("h5");
     var info = p+"info";
     var fodinfo = document.getElementById(info).getElementsByTagName("span");

  for(i=0;i<plist.length;i++)
   {
    if(obj == plist[i])
   {
     plist[i].className = "onhover";
     fodinfo[i].className = "ondis";
   }
    else
    {
     plist[i].className = "k";
     fodinfo[i].className = "notdis";
   }
   }
}