I worked out out how to use the default images folder plus the alt images folder on maxcdn.
In smarty.php
PHP Code:
if ($_SERVER['HTTPS'] != 'on')
{
$smarty->assign('ImagesDir', "http://collectables.collectablesreta.netdna-cdn.com" . $smarty_skin_dir . '/images');
$smarty->assign('SkinDir', "http://collectables.collectablesreta.netdna-cdn.com" . $smarty_skin_dir);
$smarty->assign("AltImagesDir", "http://collectables.collectablesreta.netdna-cdn.com/skin/ideal_comfort/images");
$smarty->assign("AltSkinDir", "http://collectables.collectablesreta.netdna-cdn.com/skin/ideal_comfort");
}
else
{
$smarty->assign('ImagesDir', $xcart_web_dir . $smarty_skin_dir . '/images');
$smarty->assign('SkinDir', $xcart_web_dir . $smarty_skin_dir);
}