function getBaseUrl()
{
	var offset = -1;
	var pos = 0;
	while (1)
	{
		offset = document.location.href.indexOf('/', offset+1);
		if (offset < 0)
			return document.location.href.substring(0, pos + 1);
		pos = offset;
	}
	return false;
}

function ajax_add_to_cart(form)
{
	var params = $(form).serialize();
	var url = getBaseUrl() + 'ajax_add_to_cart.php?' + params;
//	tb_show(null, url + '&height=70&width=400', null);//&modal=true
	iBox.showURL(url);
}