Support IE 10

The following comes from a dedicated customer:

Hi,

JIRA v5.1.2#773-sha1:b805b97 doesn't work for me with Internet Explorer 10 (version 10.0.9200.16384, RTM).

I know IE 10 isn't in your currently supported browser lists, so maybe this is more of a feature request than a bug report. Now that IE 10 is released in its final form (as part of Windows 8), I would hope to see it supported in JIRA.

The symptoms are: on an issue screen, click to Close Issue or Resolve Issue, which is meant to pop up the dialog overlay asking for Resolution, Fix Version/s, etc. Instead of this dialog popping up, the spinning wait icon appears in the middle of the page and never goes away.

Similarly, clicking the Create Issue button should pop up the create issue dialog, but nothing happens.

The JavaScript console pointed to an error in fancybox, which makes sense if this is how the dialog is meant to pop up.

Looking at the fancybox source code, I found the error is due to fancybox trying to do special handling for Internet Explorer 6. The code looks like this (line 29 of atlassian-jira\includes\jquery\plugins\fancybox\fancybox.js):

isIE6 = ($.browser.msie && $.browser.version < "7")

The problem seems to be that it is comparing strings not numbers. Now that the browser version is "10" (not "7" or "8" or "9"), the comparison is wrong (it's treating it as if it was "1").

As a hack, I edited fancybox.js and fancybox-min.js in my JIRA installation and removed the double quotes, changing:

< "7"

to

< 7

This seems to have got it working. (This is obviously a quick and dirty hack, not something I can expect you to support, and the tiniest fraction of what you'd need to do to officially support IE 10. I only share it in case it's of any use to you.)