function add_item(ref, qty)
{
	if (qty > 0)
	{
		$('#result').load('/cart/cart.php?y=1&a=add_item&o[0][r]=' + ref + '&o[0][q]=' + qty + ' #cart', null, function(t, s, r){
			if (s == 'success') {//	alert(t);
									self.location = 'shop.php?a=get_cart';}
			else alert('An unknown error has occurred. Please, try again.');
		});
	}
	else
	{
		alert('This quantity is not valid!');
	}
}

function remove_item(item_id)
{
	if (!$('#' + item_id)) return;
	
	$('#' + item_id).attr('value', 0);
	
	$('#cart form').submit();
}

function update_cart()
{
	$('#cart form').submit();
}

function empty_cart()
{
	$('#result').load('/cart/cart.php?y=1&a=empty_cart #cart', null, function(t, s, r){
		if (s == 'success') alert(t);
		else alert('An unknown error has occurred. Please, try again.');
	});
}

function get_index(ajax)
{
	if (ajax)
	{
		$('#cart').load('/cart/cart.php?x=1&a=get_index #cart', null, function(t, s, r){
			if (s != 'success') alert('An unknown error has occurred. Please, try again.');
		});
	}
	else
	{
		self.location = 'shop.php?a=get_index';
	}
}

function get_cart(ajax)
{
	if (ajax)
	{
		$('#cart').load('/cart/cart.php?x=1&a=get_cart #cart', null, function(t, s, r){
			if (s != 'success') alert('An unknown error has occurred. Please, try again.');
		});
	}
	else
	{
		self.location = 'shop.php?a=get_cart';
	}
	
	// com veure el carret en un popup
	// var w = window.open('cart//cart/cart.php?x=1&a=get_cart', 'cart', 'dependent=yes,scrollbars=1,status=1,toolbar=0,resizable=0,location=0,width=350,height=200,top=25,left=25');
}

function get_order(ajax)
{
	if (ajax)
	{
		$('#cart').load('/cart/cart.php?x=1&a=get_order #cart', null, function(t, s, r){
			if (s != 'success') alert('An unknown error has occurred. Please, try again.');
		});
	}
	else
	{
		self.location = 'shop.php?a=get_order';
	}
}

function send_order(ajax)
{
	var e = document.forms[0].elements;
	
	if (e['b_name'].value == '') {alert('Si us plau, ompli el camp "Nom".');return;}
	if (e['b_vat_id'].value == '') {alert('Si us plau, ompli el camp "N.I.F.".');return;}
	if (e['b_address'].value == '') {alert('Si us plau, ompli el camp "Adreça".');return;}
	if (e['b_zip'].value == '') {alert('Si us plau, ompli el camp "Codi Postal".');return;}
	if (e['b_city'].value == '') {alert('Si us plau, ompli el camp "Població".');return;}
	if (e['b_email'].value == '') {alert('Si us plau, ompli el camp "Correu electrònic".');return;}
	
	if (ajax)
	{
		//$('#cart').load('/cart/cart.php?x=1&a=send_order #cart', null, function(t, s, r){
		//	if (s != 'success') alert('An unknown error has occurred. Please, try again.');
		//});
		
		$.ajax({
			type: 'POST', 
			url: 'shop.php?x=1&a=send_order', 
			data: $("#cart form").serialize(), 
			cache: false, 
			success: function(html){
				$('#cart').append(html);
			}
		});
	}
	else
	{
		$('#cart form').submit();
	}
}

function confirm_order(ajax)
{
	if (!document.forms[0].elements['confirm'].checked)
	{
		alert('Si us plau, confirmi que ha llegit les condicions de venda.');
		
		return;
	}
	
	if (ajax)
	{
		$('#cart').load('/cart/cart.php?x=1&a=confirm_order #cart', null, function(t, s, r){
			if (s != 'success') alert('An unknown error has occurred. Please, try again.');
		});
	}
	else
	{
		$('#cart form').submit();
	}
}

function change_item(obj, img)
{
	var val = obj[obj.selectedIndex].value;
	
	document.images[img].src = 'cart/img/' + val + '.jpg';
	
	for (var i = 0;i < prods.length;i++)
	{
		if (prods[i][0] == val)
		{
			$('#' + img).innerHTML = prods[i][1];
			
			break;
		}
	}
}

function toggle_ship_to()
{
	$('#cart div.ship_to').toggle('normal');
}

var prods = 
[
	['P001','100,00'], 
	['P002','200,00'], 
	['P003','300,00'], 
	['P004','400,00']
];