code: function(start) {
  		"use strict";
  
  		var parent = this;
  		return this.triggerEvent("afterLoadPreviousDomain", function() {
  			var subDomain = parent.getSubDomain(start);
  			return [subDomain.shift(), subDomain.pop()];
  		});
  	}
docs: Event triggered after shifting the calendar one domain back
  
  @param  Date		start	Domain start date
  @param  Date		end		Domain end date