function setNavigation(navText)

{

      var oMenu = getElementsByTagAndClassName("a", null, "navigation");

                        

      for (i=0; i < oMenu.length; i++)

      {

            if (oMenu[i].innerHTML == navText)

            {

                  oList = oMenu[i].parentNode.parentNode;

                  addElementClass(oList, "on");

            }

      }

}