code: function(opts) {
  			opts = $.extend({}, this.defaults, opts);
  
  			if (this.overlay) {
  				this.close();
  			}
  
  			this.overlay = $('<div class="fancybox-overlay"></div>').appendTo( F.coming ? F.coming.parent : opts.parent );
  			this.fixed   = false;
  
  			if (opts.fixed && F.defaults.fixed) {
  				this.overlay.addClass('fancybox-overlay-fixed');
  
  				this.fixed = true;
  			}
  		}
docs: element that contains "the lock" Public methods