function initHoverTip() {
  if ( document.getElementById && document.getElementById(Tooltip.tipID) ) { 
    Tooltip.followMouse = false;  // must be turned off for this version
    var tip = document.getElementById(Tooltip.tipID)
    tip.onmouseout = function(e) { Tooltip.tipOutCheck(e) }
    tip.onmouseover = function() { Tooltip.clearTimer() }
  }
}

Tooltip.tipOutCheck = function(e) {
  e = dw_event.DOMit(e);
  // is element moused into contained by tooltip? or tooltip itself?
  var tooltip = document.getElementById(Tooltip.tipID);
  var toEl = e.relatedTarget? e.relatedTarget: e.toElement;
    if ( tooltip != toEl && !contained(toEl, tooltip) ) 
      Tooltip.hide();
}

// returns true of oNode is contained by oCont (container)
function contained(oNode, oCont) {
  if (!oNode) return; // in case alt-tab away while hovering (prevent error)
  while ( oNode.parentNode ) {
    oNode = oNode.parentNode;
    if ( oNode == oCont ) return true;
  }
  return false;
}

Tooltip.timerId = 0;
Tooltip.clearTimer = function() {
  if (Tooltip.timerId) clearTimeout(Tooltip.timerId);
}

initHoverTip();