Lenorah

In the past my client paid to have webapps developped according to their needs and their compatibility was granted until IE7. They can’t install multiple versions of IE in the computers using these apps. And the upgrade time and cost for these old applications (which are still working flawlessly) is huge compared to this project’s budget.

This is why many institutions are still using IE6 and 7 :/

Thank you, I will transfer your answer to my client. I’m still hoping that someone can answer my four questions.

Thank you for your help Ipstenu. I discovered I won’t have to put my hands into the code for this.
Here is what I found out :

First for the plugin to work, I had to go to the Multisite Language Switcher plugin options page and push update button even if I didn’t change anything, for each site.
I read too that the three blogs have to have the same admin e-mail adress.
Then I could go to the page / post (and maybe more) list, click edit, and on the upper right corner I could choose the page / post I wanted to refer to in the other blogs, from this page!
Then I inserted the widget somewhere and I now Ican jump from one language to another.
I found everything here :
http://ww.wp.xz.cn/support/topic/plugin-multisite-language-switcher-cant-use-the-pligun?replies=9

Now I’m trying to figure out how to change the flag…

Can you briefly explain which set-up does that? Hope that’s not too clueless of a question.

I’m not sure I understand what you would like to know. Maybe this question is directed towards Ipstenu?

(use it for redirection, pictures of flags etc)

Ok. What exactly do you mean by “use it for redirection”?

And also… If I get it right, I won’t be able to access to the parent’s site front end, because of the redirection, right?
Will I have to configure the .htaccess manually to tell it to redirect every request pointing to the root to the fr subdomain, except for /wp-admin?