function selectedEvents(eventPeriod)
{

var displayEvents = document.getElementById('events');

      //Clear the current setting
      if (displayEvents.hasChildNodes())
       {
        while (displayEvents.childNodes.length >= 1)
         {
          displayEvents.removeChild(displayEvents.firstChild);       
         } 
       }  

      var newFrame = document.createElement('iframe');
      var periodMark = 'eventList.html#' + eventPeriod;
      newFrame.setAttribute('src',periodMark); 
      displayEvents.appendChild(newFrame);




}