Display a warning message for Firefox users

[Ambroise]

I want to display a warning message specifically to the visitors of my social network who use Mozilla Firefox. How do I do that?

I wish to warn Firefox users because they need to update the RealPlayer plugin to view the videos correctly on my site (for those who have installed the RealPlayer plugin).
Indeed, there is a possible conflict between the Realplayer plugin and the Flash plugin and it's necessary that both plugins are up to date so that the video can be viewed correctly.

About 2 years ago, I found out on creators.ning.com a code to display a warning to visitors using an older version of Firefox or Internet Explorer (not compatible with Ning). Unfortunately I can not find this discussion.

Any help or advice is welcome.

[Ambroise]

I want the message to be displayed only to Firefox users. I'm looking for a javascript code. Thank you to your advice but it's not what I'm looking for.

___

I have updated my question this way :

I want to display a warning message specifically to the visitors of my social network who use Mozilla Firefox. How do I do that?

[SweetPotato]

scrap my last reply, that would annoy the hell out of users.

try this:

<script type="text/javascript">
x$(document).ready(function() {  
    if (x$.browser.mozilla) {
        x$('.xj_user_info').before('<div style="width:210px;background:#e4e4e4;height:30px;padding:10px;margin-bottom:10px"><a target="_blank" href="http://uk.real.com/?mode=rp">Warning!- If you use Firefox you will need Real Player</a></div>');
    }
});
</script>

change wording and style as bolded.

SP

[Riccardo Rossini]

Is it a sort of pop up Potato, and, in case, is it possible to extend it for all browsers? Thanks

[SweetPotato]

It sits above the account box in the right column. What would be the point in one for all browsers ? You could just use a text box without script

[Riccardo Rossini]

Ok I thought that was a pop up

[Ambroise]

Thank you for the code SweetPotato. I give a try and it works.

I have two questions and a comment:

Question 1: Is it possible to test the presence of Realplayer plugin?

Question 2: I would like users to have the ability to close the box and the box remains closed from the moment it was closed once. Is it difficult to do this?

Note: RealPlayer plugin is not required to view the videos. The plugin must be updated if present. If absent, no problem. I am surprised that no one here speak of the problem of videos with Firefox because I have a lot of complaints from my users about it.