docs: function(percentage) {
  					var min = (this.options.min === 0) ? 0 : Math.log(this.options.min);
  					var max = Math.log(this.options.max);
  					var value = Math.exp(min + (max - min) * percentage / 100);
  					value = this.options.min + Math.round((value - this.options.min) / this.options.step) * this.options.step;
  					/* Rounding to the nearest step could exceed the min or
  					 * max, so clip to those values. */
  					if (value < this.options.min) {
  						return this.options.min;
  					} else if (value > this.options.max) {
  						return this.options.max;
  					} else {
  						return value;
  					}
  				}