// JavaScript Document
//move he 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')); 


//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' : '-230px'});
	}); 
});

//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' : '-230px'});
	});
});