ui: block page change on tab change in Firefox

[GoogleCodeExporter]

>What steps will reproduce the problem?
1. Start go-tour in a tabbed browser with at least one other tab open
2. Press Ctrl+page up to switch to a different tab
3. Press Ctrl+page down to switch back

>What is the expected output? What do you see instead?

Expect to stay on same slide in go-tour; instead, go-tour progresses to next 
slide when I return to the tab.

>What version of the product are you using? On what operating system?

Unknown; gotour does not respond to --version. I installed it earlier today 
with `go get code.google.com/p/go-tour/gotour`

>Please provide any additional information below.

Replicated in Firefox 12.0 on Ubuntu 12.04. Curiously, does not happen on 
Chromium 18.0.1025.151 Ubuntu 12.04.

I believe the patch below may address it, but I don't see build or test 
instructions anywhere obvious, and as a go novice, I can't invest the time to 
figure this out right now.

Come to think of it, it's somewhat dubious of Firefox to send these events to 
the page at all, but working around the issue would make for a better go user 
experience.

Original issue reported on code.google.com by m.sakre...@gmail.com on 10 Jun 2012 at 2:16

Attachments:

• no-page-change-on-tab-change.patch

[GoogleCodeExporter]

This is a good task for someone looking for work. (Needs testing.)

Original comment by a...@golang.org on 2 Jul 2013 at 6:16

• Changed title: ui: block page change on tab change in Firefox
• Changed state: Accepted

[GoogleCodeExporter]

Issue 89 has been merged into this issue.

Original comment by a...@golang.org on 15 Jul 2013 at 1:05

[GoogleCodeExporter]

Project Member can you please tell me that where i can get the certification 
gor the GO language in india.?

Original comment by animesha...@gmail.com on 7 Sep 2013 at 11:10