anchor.diff:  		add: function(criterion) {
   			this.root_array.push(criterion);
   			$(this.root_div).insert(criterion.root_div_holder, {position: 'bottom'});
  -			$('selected_criterion_name').update(criterion.name);
  -			//TODO: Remove 
  -			$('rubric_levels').show();
  +                        $('selected_criterion_name').update(criterion.name);
   		},
  +                unselect_all: function() {
  +                    this.root_array.each(function(criterion) {
  +                        criterion.hide();
  +                    });
  +                },
   		remove: function(criterion) {
   			this.root_array = this.root_array.without(criterion);
   			$(criterion.root_div_holder).remove();
   			$('selected_criterion_name').update('');
   			//TODO: Remove 
  -			$('rubric_levels').hide();
  +			$(criterion.levels_holder).remove();
   		},
   		root_div: null,
   		root_array: $A()
  
positive.code:                         this.root_div_holder.insert($(this.root_div), {'position':'bottom'});
  
  			//Create Criterion Levels
  			
  			this.levels = levels;
  
  		},
  		hide: function() {
                   new Effect.BlindUp(this.root_div);
                   new Effect.Appear(this.title_div);
                   $(this.root_div_holder).removeClassName('criterion_holder_selected');
  		},
  		show: function() {
                   new Effect.BlindDown(this.root_div);
  		 new Effect.Fade(this.title_div);
                   $(this.root_div_holder).addClassName('criterion_holder_selected');
  		 $('selected_criterion_name').update(this.name);
  		//TODO: Remove 
  		$('rubric_levels').show();
  
  		},
  		root_div: null,
                  root_div_holder: null,
                  title_div: null,
  		cri_name: null,
  		description_input: null,
  		weight_display: null,
  		name: null,
  		description: null,
  		weight: null,
  		levels: $A()
  	})
  
  
negative.code: 				Event.element(event).addClassName('hover_edit');
  				made_change();
  			}
  
                          this.exists_in_db = exists_in_db;
  
  			//Create the root div to hold on screen elements
  			var root_div = new Element('div', {'class': 'criterion'});
  