Refreshing javascript RSS feed without flickering

Hello,

I have the following RSS feed: RSS Feed

I load this feed like this:

file: rss2.php

Now what I want to do, is automatically refresh this page. I tried to do this with a meta tag, but this gives flickering when it refreshes.

Now what I want to do, is check for updates in the RSS feed, say, every 1 minute. If there are updates, I want it to display the latest feed, but I don't want it to flicker.

I understood that the way to do this is through javascript/jquery/AJAX. My knowledge of those is pretty much nonexistant, so I googled quite a bit and found some tutorials and such, but nothing seems to work the way I want for me. In the end I think at some point I had something that did refresh fine but it didn't load the CSS so I was missing the layout.

Besides the rss2 file I also have rss-testing.php, this is what I have right now whilst trying, but it's not working at all for me:

Thanks!