I want to add the jQuery Cycle Plugin to the Text/HTML module but it won't work...

Default.aspx
I've added this in the header:
<script type="text/javascript" src="/scripts/cycle.js"></script>
And added a folder with the correct files in the root of my site...

Text/HTML module
<script type="text/javascript"> $('#pictures').cycle('fade');</script> <div id="pictures"><img height="230" width="795" src="/Portals/0/ekuline/imageRotator/home/Bubbels.jpg" alt="" /><img height="230" width="795" src="/Portals/0/ekuline/imageRotator/home/Train.jpg" alt="" /></div>

This is the code I entered in the Text/HTML module.
The Firefox Webdeveloper Toolbar-plugin gives the following error:
Error: $("#pictures").cycle is not a function
Source: http://dev.ekuline.de/Default.aspx

What's the best way to implement this?
In the Host Settings I checked all the three checkboxes concerning jQuery...

Thanks Ian!
It works... partially...

I added the following JavaScript so my images are invisible while they are loading... else all images are shown while loading.

$j(window).load(function() {
     $j("#loading").hide();
     $j("#picture").show();
}); 

This piece of code works BUT when I change the language of my site, the images aren't visible. I found out that the code above doesn't fire when changing the language... How can I solve this?