Index: branches/1.2.x/platform/inc/jquery/thickbox/thickbox.js
===================================================================
diff -u -N -r15756 -r15792
--- branches/1.2.x/platform/inc/jquery/thickbox/thickbox.js	(.../thickbox.js)	(revision 15756)
+++ branches/1.2.x/platform/inc/jquery/thickbox/thickbox.js	(.../thickbox.js)	(revision 15792)
@@ -64,11 +64,7 @@
 			}
 		}
 
-		if (TB.detectMacXFF()) {
-			$('#TB_overlay').addClass('TB_overlayMacFFBGHack'); // use png overlay so hide flash
-		} else {
-			$('#TB_overlay').addClass('TB_overlayBG'); // use background and opacity
-		}
+		$('#TB_overlay').addClass('TB_overlayBG'); // use background and opacity
 
 		if (params.caption === null) {
 			params.caption = '';
@@ -454,14 +450,3 @@
 
 	return [w, h];
 }
-
-TB.detectMacXFF = function () {
-	var userAgent = navigator.userAgent.toLowerCase();
-	if (userAgent.indexOf('mac') != -1 && userAgent.indexOf('firefox') != -1) {
-		return true;
-	}
-
-	return false;
-}
-
-