The test ensures that non-fast scrollable regions nested in iframe are correctly offset by the iframe location. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS nonFastScrollableRects.length is 2 PASS rectToString(nonFastScrollableRects[0]) is "[51, 102, 200, 200]" PASS rectToString(nonFastScrollableRects[1]) is "[51, 402, 211, 211]" PASS successfullyParsed is true TEST COMPLETE