$(function() {
	function slider() {
		listSize = $('.block-slider-container').find('li').size();
		slideWidth = $('.block-slider-container').find('li').width();
		currentIndex = 1;
		delay = 3000;
		speed = 500;
		
		//slide forward
		function forward() {	
			if (currentIndex == listSize) {
				$('.block-slider-container').animate({'right': '0'});
				currentIndex = 1;
			} else {
				$('.block-slider-container').animate({'right': '-='+slideWidth+''}, speed, 'easeInOutExpo');
				currentIndex = currentIndex+1;
			}
			imgTimer = setTimeout(forward, delay);
		}
		
		//slide backward
		function backward() {	
			if (currentIndex !== 1) {
				$('.block-slider-container').animate({'right': '+='+slideWidth+''}, speed, 'easeInOutExpo');
				currentIndex = currentIndex-1;
				imgTimer = setTimeout(forward, delay);
			} 
		}
		
		//next
		$('#slider-next').click(function() {
			imgTimer = window.clearTimeout(imgTimer);
			forward();
		});
		
		//back
		$('#slider-prev').click(function() {
			imgTimer = window.clearTimeout(imgTimer);
			backward();
		});
		
		//stop slider on hover
		$('.block-slider-container').hover(function() {
			imgTimer = window.clearTimeout(imgTimer);
		}, function() {
			imgTimer = setTimeout(forward, delay);
		});
		
		//run slider
		forward();
	} 
	slider();

});