hmmm yes that makes sense on a normal html static website but since in silverstripe the JS on my template is described like this:

<% require javascript(mysite/javascript/shadowbox-3.0.3/shadowbox.js) %>

where do I put the init()???

sorry for being so clueless!!

Hmmm, you could write the code directly to your template beneath your <% require ... %> ...
or you could create a javascript file called "shadowbox_setup.js" in /mysite/javascript, write Shadowbox.init(); to it, and require this file in your template :

<% require javascript(mysite/javascript/shadowbox-3.0.3/shadowbox.js) %> 
<% require javascript(mysite/javascript/shadowbox_setup.js) %>

...
or you delete these <% require ...%> thingies from the template and add this to the init() method of the Controller class of the Page type:

function init() {
   parent::init();
   Requirements::javascript('mysite/javascript/shadowbox-3.0.3/shadowbox.js');
   Requirements::customScript('<script type="text/javascript">Shadowbox.init();</script>');
}

^^Hope this is somewhat understandable, cause we have a nice party going on and i allready had some beer :-)

Cheers

aaaaaah thank you so much!!! the first method did the trick...however not until after I noticed that I forgot to include the shadowbox.css as well....now that this is solved it finally works!!

thanks so much! You´ve always been a great help (especially when drunk ;-)
have a nice party!

PROST!