Charset:
Raw byte 0x80:: €
Decoded and escaped:
Raw byte 0x81:
Decoded and escaped:

Cross-browser Behavior:

In summary, all browsers decode 0x81 to U+81 under cp1252, except Opera before version 12. Starting at version 12, Opera is consistent with all other browsers.

Chrome 14

Chrome 24

Firefox 3

Firefox 4

Firefox 17

Internet Explorer 6

Internet Explorer 7

Internet Explorer 8

Opera 10

Opera 11.6

Opera 12.11

Safari 4

Safari 5.1