var bstop  = false;
var timeout;
$(document).ready(function(){
	/* This code is executed after the DOM has been completely loaded */
	
	var totWidth=0;
	var positions = new Array();
	
	$('#slides .slide').each(function(i){
		
		/* Traverse through all the slides and store their accumulative widths in totWidth */
		
		positions[i]= totWidth;
		totWidth += $(this).width();
		
		/* The positions array contains each slide's commulutative offset from the left part of the container */
		
		if(!$(this).width())
		{
			alert("Please, fill in width & height for all your images!");
			return false;
		}
		
	});
	
	$('#slides').width(totWidth);

	/* Change the cotnainer div's width to the exact width of all the slides combined */

	$('#menu ul li a').click(function(e){
		btop = true;
		clearTimeout(timeout);

			/* On a thumbnail click */		
			$('li.menuItem').removeClass('act').addClass('inact');
			$(this).parent().addClass('act');
			
			var pos = $(this).parent().prevAll('.menuItem').length;			
			$('#slides').stop().animate({marginLeft:-positions[pos]+'px'},450);
			/* Start the sliding animation */
			
			e.preventDefault();
			/* Prevent the default action of the link */
	});
	
	$('#menu ul li.menuItem:first').addClass('act').siblings().addClass('inact');
	/* On page load, mark the first thumbnail as active */

	
	
	timeout = setTimeout(function(){
		animate("next",false);
	},2000);
	
	function animate(dir,clicked){		
		$('#slides').stop().animate({marginLeft:-positions[1]+'px'},450);
		$('li.menuItem').removeClass('act').addClass('inact');		
		if( !bstop)
		timeout = setTimeout(function(){animate2("next",false);},4000);
	}
	function animate2(dir,clicked){		
		$('#slides').stop().animate({marginLeft:-positions[2]+'px'},450);
		if( !bstop)
		timeout = setTimeout(function(){animate3("next",false);},4000);
	}
	function animate3(dir,clicked){		
		$('#slides').stop().animate({marginLeft:-positions[3]+'px'},450);
		if( !bstop)
		timeout = setTimeout(function(){animate4("next",false);},2000);
	}
	function animate4(dir,clicked){		
		$('#slides').stop().animate({marginLeft:-positions[0]+'px'},450);
		if( !bstop)
			timeout = setTimeout(function(){animate("next",false);},2000);
	}


	
});