anchor.diff:              }
   
   			function registerShowHandler(){
  -                if ( showButton != null) {
  +                if (showButton) {
                       Event.observe(showButton, "click", function(e) {
                           Event.stop(e);
                           day.each(SC.slideAndShow);
  
positive.code: 
              function showChangesSetup() {
                  var show = $("showChanges")
                  if (show != null) {
                      Event.observe(show, "click", function(e) {
                          var mytext = show.innerHTML
                          Event.stop(e)
  
negative.code: 			}
  
  			function registerHideHandler(){
                  if (hideButton) {
                      Event.observe(hideButton, "click", function(e) {
                          Event.stop(e);
                          day.each(SC.slideAndHide);
  