anchor.diff:                  </c:if>
               }
   			function arrowSetup(){
  -				registerArrowHandlers()
  +                if (init == null) {
  +                    initialize_arrows();
  +                }
  +                registerArrowHandlers()
   			}
   			function showMonthSetup(){
   				var counter = 0;
  
positive.code: 
  				}
  
  				if (allDaysAreHidden) hideButton.conceal()
  				else hideButton.reveal()
  
  			}
  
  
negative.code: 
  			}
  			function initializeNewStudySegment(){
                  if (init == null) {
                      initialize_arrows();
                  }
                  if ($$(".day").length != 0){
  			    	initialize_arrows()
  					showSetup()
  					hideSetup()
  