IE7 iso-8859-1 encoding

I'm noticing that when posting a form through IE7, accented characters are开发者_如何学编程 getting messed up as soon as the request hits the server. But in FF3 it works just fine. The page encoding is set to ISO-8859-1. Is there any particular place I should start investigating?

Thanks in advance!

EDIT: The behavior I'm noticing is specifically a ü character when copied and pasted from word. If I paste it into IE7 from notepad it works fine.

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It turns out that the AJAX request had not explicitly specified a charset request header. FF 3 seemed to have set it by default but IE7 would not. Once I had defined that on the AJAX request header it started working.

Thanks all for your help.

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Check if your server is sending default charset header and turn it off if it is. You can use Live HTTP Headers Firefox extension.

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• check if characters are mangled by client on send, or by server on receive (get a HTTP debugger for this- e.g. Fiddler)
• what kind of accented characters? ISO-8859-1 only has support for Western European accented chars; any others (e.g. "šžý") will be mangled because they are undefined in this encoding.
• how are you setting the encoding? in HTTP header or in META tag?

It's not a silver bullet, but I'd recommend switching to UTF-8 if at all possible - the i18n and l10n hassles you'll save yourself are immense.