diff --git a/src/event.js b/src/event.js
index 4127fa8f..7fa58ec8 100644
--- a/src/event.js
+++ b/src/event.js
@@ -13,7 +13,7 @@ jQuery.event = {
 
 		// For whatever reason, IE has trouble passing the window object
 		// around, causing it to be cloned in the process
-		if ( elem.setInterval && elem != window )
+		if ( elem.setInterval && ( elem != window && !elem.frameElement ) )
 			elem = window;
 
 		// Make sure that the function being executed has a unique ID