var move;
var numberOfLis;
var currentPosition;
var timerid;
var delay = 3000;

jQuery(function(){
	
/* GET NUMBER OF LIST ITEMS AND SET CURRENT POSITION TO 1 */

	numberOfLis = jQuery('#scroller ul li').length;
	currentPosition = '1';
	moving = true;
	
/* MOVE PRODUCTS AUTOMATICALLY ONLOAD */

	move = function(){
		if (currentPosition !=(numberOfLis - '4')){
			jQuery('#scroller ul').animate({'left' : '-=182px'},1000, 'easeOutBack');
			
			currentPosition ++;
			
			imageChange(currentPosition);
			
		};
	};
	
/* ADD OR REMOVE IMAGES DEPENDING ON POSITION */

	function imageChange(currentPosition){
		if(currentPosition == 1){
			jQuery('#scroll-left').attr('src', 'nav/blank.gif');
		}else{
			jQuery('#scroll-left').attr('src', 'nav/left.gif');
		};
		
		if(currentPosition ==(numberOfLis - '4')){
			jQuery('#scroll-right').attr('src', 'nav/blank.gif');
		}else{
			jQuery('#scroll-right').attr('src', 'nav/right.gif');
		};
	}
	
/* SCROLL WHEN ARROW IMAGES ARE CLICKED */

	jQuery('#scroll-right').click(function(){
		
		clearInterval(timerid);
		
		if (currentPosition !=(numberOfLis - '4')){
			jQuery('#scroller ul').animate({'left' : '-=182px'},1000, 'easeOutBack');
			
			currentPosition ++;
			
			imageChange(currentPosition);
					
			timerid = setInterval('move()',delay);
			
		};		
	});
	
	jQuery('#scroll-left').click(function(){
		
		clearInterval(timerid);
		
		if (currentPosition !=1){
			jQuery('#scroller ul').animate({'left' : '+=182px'},1000, 'easeOutBack');
					
			currentPosition --;
			
			imageChange(currentPosition);
			
			timerid = setInterval('move()',delay);
		};
		
	});
	
	timerid = setInterval('move()',delay);

});