response header support for Content-Language

Does IE7 and Google Chrome support the response header "Cont开发者_如何学Goent-Language"? I am setting this in my application in to the response header for page requests. The header is recognised in ie8, ie9 and FF4 where the following css trick works:

h1:lang(en) { font-weight: bold; }
h1:lang(es) { font-weight: normal; color: #FF0000; }

However in IE7 and chrome, the css is not applied to particular elements.

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This article might be helpful for you: http://rishida.net/blog/?p=67.

According to the author, the :lang selector is not supported by IE7. "h1[lang |= 'es']" should work, but you have to set the lang attribute on each h1 element - you can't rely on the Content-Language. However, :lang is support to be supported in Chrome for at least versions 2 and onward. Can you dynamically change the lang attribute on your html element as well?

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It's not supported in IE7, not sure about chrome.

EDIT

I just ran a test on Chrome 11 for windows and it was supported.