So here is the extension for chrome.
What it does :
After installing the extension in Chrome, when you click on the link below go diagram "Click Here To Show Diagram Code", you will see another diagram with buttons that allow to play the "numbered" moves one at time.
The diagram is also "playable", the behaviour is a bit too basic but that's better than nothing... if you click on an empty place, that will place a black stone, if you click on a black stone, it will toggle to a white stone, and if you click a white stone, it will be removed...
A warn firstOnce the extension is installed, keep in mind that the rendered "playable" diagram is not under the responsability of "life in 19x19", so if there is something wrong in the diagram and you talk about that, people may even not know what you are talking about...How to install :
You first need to donwload the extension for chrome, which come in a file called "godiag.crx"
but before you go the download page, I need to tell you that I wrote the plugin myself and
I can grant you that it is free from any commercial, spyware, malware or what ever you may not like .. only go stuff inside.
The crx file is a zip file which can be opened with editor like "winzip or 7zip" so you can verify that for yourself in the code itself (but you will then need some understanding of javascript

...)
Well, if your still interested

... here is the link to the plugin : (I tryied to attache the file to that post but .crx files are not accepted... so I just put a quick link on a web page of mine).
http://picshell.ovh.org/go/Just click on the link, chrome may tell you that it can't directly install it from that site, but that's ok, you just need to get the file for now and then follow these steps :
once you got the file, go to chrome extension page (just type "chrome://extensions/" as a url to go there) and drop the "godiag.crx" file to the extension page, that's it !
How to uninstall :
You can remove it whenever you want from the extension page of chrome, by clicking on the trashcan icon.
Are there known problemsThe extension will run on your computer (not on the server side, which even doestn't know you are using an extension...), so it will not slow down the server. I didn't noticed any problem using it myself. The extension is written to be the lightest as possible so it should not disturbe your journey, even with page that contains multiple diagrams.
LimitationsThe extension doesn't cover all the functionalities of the go diagram (and will probably never do).
That's close enougth for me at least...simple one should work just fine.
Feel free to tell me if something is wrong or missing.
Hope you will like it.
PS : to admins, Hope it's ok for you too as nothing append on the server side... but if you just don't like that idea of plugin, for any reason, just tell me and I will remove everything related to this plugin.