code: function(n) {
  		"use strict";
  
  		if (this._minDomainReached || n === 0) {
  			return false;
  		}
  
  		var bound = this.loadNewDomains(this.NAVIGATE_LEFT, this.getDomain(this.getDomainKeys()[0], -n).reverse());
  
  		this.afterLoadPreviousDomain(bound.start);
  		this.checkIfMinDomainIsReached(bound.start, bound.end);
  
  		return true;
  	}
docs: Shift the calendar one domain backward
  
  The previous domain is loaded only if it's not beyond the minDate
  
  @param int n Number of domains to load
  @return bool True if the previous domain was loaded, else false