/*
 * top navigation
 */
var classNameSelected = 'selected1';
var topnavigationSelectedId = null;
var topnavigationCurrentId = null;
function showSubnavigation (li) {
  hideAllSubnavigation (li.parentNode);
  if (li.getElementsByTagName('div')
      && li.getElementsByTagName('div').length > 0)
    topnavigationCurrentId = li.id;
  li.className = classNameSelected;
}
function hideAllSubnavigation (ul) {
  var li = ul.getElementsByTagName('li');
  for (var i = 0; i < li.length; i++) {
    if (li[i].className == classNameSelected)
      li[i].className = 'unselected1';
  }
  topnavigationCurrentId = null;
}
function setPreselectedSubnavigation (ul) {
	hideAllSubnavigation (ul);
	if (topnavigationSelectedId)
		showSubnavigation (document.getElementById(topnavigationSelectedId));
}
function topnavigationMouseover (e) {
  if (!e) e = event;
  if (!e) return;
  var eO = e.target ? e.target : e.srcElement;
  if (!eO) return;
  /* event-bubbling */
  if (eO && eO.className && eO.className == 'toplink'
      || eO && eO.className && eO.className == 'toplink pulldown') {
    showSubnavigation (eO.parentNode);
  }
}
function topnavigationMouseout (e) {
  if (!e) e = event;
  if (!e) return;
  var eO = e.target ? e.target : e.srcElement;
  if (!eO) return;
  setPreselectedSubnavigation (document.getElementById('mptopnavigation'));
}