function change_option()
{
	var option_ids = '';
	$('.product_option').each(function() { 
		option_ids += $(this).val() + ',';
	});
	option_ids = option_ids.substr(0,option_ids.length-1);
	var product_id = $('#product_id').val();
	$.post('ajax.php', {
		option_ids_str: option_ids,
		product_id_int: product_id
	}, function(data) {
		if( data.replace(/^\s+|\s+$/g,"").length > 0 ) {
			var array = data.split('|');
			$('#product_price').val(array[0]);
			$('#the_price').html(number_format(array[0],2));
			if( array[1] ) {
				$('#delivery').show();
				$('#product_delivery').val(array[1]);
				$('#the_delivery').html(array[1]+' Delivery');
			} else {
				$('#delivery').hide();
				$('#product_delivery').val('');
			}
		}
	});
}

$(document).ready(function() {
	change_option();
	$('.product_option').change(function() {
		change_option();
		return false;
	});
	$('.product_option').keyup(function() {
		change_option();
		return false;
	});	
});