circlecell/jscompress.com

@cc_on comments are stripped out

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Apparently UglifyJS does not parse comments, and just strips out anything with an IE conditional comment:

/*@cc_on
            if (/^10/.test(@_jscript_version)) {
                $("html").addClass("ie10");
            }
        @*/

More on this: http://stackoverflow.com/questions/1843247/cc-on-and-ie6-detection

Official docs: http://msdn.microsoft.com/en-us/library/ie/8ka90k2e%28v=vs.94%29.aspx

This is not going to be supported, because Uglify.js (which we use for compression) cannot parse comments.