src/cal-heatmap.js
function(start) {
		"use strict";

		var parent = this;
		return this.triggerEvent("afterLoadPreviousDomain", function() {
			var subDomain = parent.getSubDomain(start);
			return [subDomain.shift(), subDomain.pop()];
		});
	}
function(start) {
		"use strict";

		var parent = this;
		return this.triggerEvent("afterLoadPreviousDomain", function() {
			var subDomain = parent.getSubDomain(start);
			return [subDomain.shift(), subDomain.pop()];
		});
	}
function ( start ) { "use strict" ; var parent = this ; return this . triggerEvent ( "afterLoadPreviousDomain" , function ( ) { var subDomain = parent . getSubDomain ( start ) ; return [ subDomain . shift ( ) , subDomain . pop ( ) ] ; } ) ; }
Event triggered after shifting the calendar one domain back

@param  Date		start	Domain start date
@param  Date		end		Domain end date
Event triggered after shifting the calendar one domain back