 
 		@value @options.initial
 
+		Slider.polling.start() if @options.poll
+
 	value: (v, options={}) ->
 		@position v, _.extend options, normalized: false
 

				window.addEventListener _.endEvent, (e) =>
					start = null
					_.removeClass @slider.element, 'dragging'
					if @slider.options.step?
						@slider.position @slider.position()


		valueInvalid: 'slider value must be between options.min and options.max'
		positionInvalid: 'slider position must be between 0 and 1'

	@polling: 
		timeout: null
		
		interval: 1931
		
		start: -> 
			if not @timeout?
				@timeout = setInterval ->
					Slider.instances.map (slider) -> 
						if slider.options.poll and not slider.transitioning and not slider.dragging
							slider.position slider.position()
				, @interval
		
		stop: -> clearInterval(@timeout) if @timeout?


	@defaults:
		min: 0
		max: 1
