base.start_interval = function(){
			
			//Clear out any existing interval
			clearInterval(base.ticker);
			
	    	base.ticker = setInterval(function() {
	    	base.$el.find('li:last').detach().prependTo(base.$el).css('marginTop', '-' + base.options.row_height);
	    		base.$el.find('li:first').animate({
	            	marginTop: '0px',
	            }, base.options.speed, function () {
				        base.reset_interval();
				    });
	            
	    	}, base.options.interval);
	    }