// tooltip widget
function positionTooltip(event, element){
  var x = Event.pointerX(event)
  var y = Event.pointerY(event);
  element.style.top = (y + 10);
  element.style.left = (x - 550);
}



function showTooltip(event, element) {

  positionTooltip(event, element);

  element.show();

}


function hideTooltip(event, element) {

  positionTooltip(event, element);

  element.hide();

}


function toggleTooltip(event, element) {

  var x = Event.pointerX(event);

  var y = Event.pointerY(event);

  element.style.top = y + 5;

  element.style.left = x - 40;

  element.toggle();

        }