-// Footer disabled or already sent?
-// 1234 5 54 45 5 5 543 3 321
-if ((((!isset($GLOBALS['footer_sent'])) || (($GLOBALS['footer_sent'] != 1) && ($GLOBALS['footer_sent'] != 2))) && (!isCssOutputMode()))) {
+// Footer disabled (e.g. CSS/AJAX/image output) or already sent?
+// 1234 5 54 45 5 5 543 3 443 3 443 3 44321
+if ((((!isset($GLOBALS['__footer_sent'])) || (($GLOBALS['__footer_sent'] != 1) && ($GLOBALS['__footer_sent'] != 2))) && (!isCssOutputMode()) && (!isAjaxOutputMode()) && (!isImageOutputMode()))) {