$(document).ready(function() {
	//move the last list item before the first item. The purpose of this is if the user clicks to slide left he will be able to see the last item.
	$('#carousel_ul li:first').before($('#carousel_ul li:last')); 

	if($('#carousel_ul li').length * parseInt($('#carousel_ul li').outerWidth()) > parseInt($("#carousel_inner").css("width"))){
		$('#right_scroll').show();
		$('#left_scroll').show();
		$("#carousel_ul").css("left",-((parseInt($('#carousel_ul li').outerWidth())+10)*3));
	}else{
		$("#carousel_ul").css("left",0);
	}

	//when user clicks the image for sliding right        
	$('#right_scroll img').click(function(){
		//get the width of the items ( i like making the jquery part dynamic, so if you change the width in the css you won't have o change it here too ) '
		var item_width = $('#carousel_ul li').outerWidth() + 10;
		
		//calculae the new left indent of the unordered list
		var left_indent = parseInt($('#carousel_ul').css('left')) - item_width;
		
		//make the sliding effect using jquery's anumate function '
		$('#carousel_ul:not(:animated)').animate({'left' : left_indent},500,function(){    
			
			//get the first list item and put it after the last list item (that's how the infinite effects is made) '
			$('#carousel_ul li:last').after($('#carousel_ul li:first')); 
			
			//and get the left indent to the default -210px
			$('#carousel_ul').css({'left' : '-210px'});
		}); 
	});
	
	//when user clicks the image for sliding left
	$('#left_scroll img').click(function(){
		
		var item_width = $('#carousel_ul li').outerWidth() + 10;
		
		/* same as for sliding right except that it's current left indent + the item width (for the sliding right it's - item_width) */
		var left_indent = parseInt($('#carousel_ul').css('left')) + item_width;
		
		$('#carousel_ul:not(:animated)').animate({'left' : left_indent},500,function(){    
		
		/* when sliding to left we are moving the last item before the first list item */            
		$('#carousel_ul li:first').before($('#carousel_ul li:last')); 
		
		/* and again, when we make that change we are setting the left indent of our unordered list to the default -210px */
		$('#carousel_ul').css({'left' : '-210px'});
		});	
	});	
	
});