CKEditor 3 Custom Template File

Hi!
Have had a look at the developer docs for custom template definitions: http://docs.cksource.com/CKEditor_3.x/Developers_Guide/Templates

Have managed to return my custom template using a function in the definitions file:

CKEDITOR.addTemplates( 'default',
{
   // The name of the subfolder that contains the preview images of the templates.
   imagesPath : CKEDITOR.getUrl( CKEDITOR.plugins.getPath( 'templates' ) + 'templates/images/' ),

   // Template definitions.
   templates :
       [
           {
               title: 'Schedule',
               image: 'template1.gif',
               description: 'Lorem ipsum...',
               html: GetTable()
           }
       ]
});

the GetTable() function return a html table. Now to my issue, I would like to retrieve the html from a php file using ajax/get, but cannot get this to work.

Have tried various ways, for example:

$.get( "js/test.html", function( data ) {
return data;
});

But nothing seems to work. Any suggestions to point me in the right direction is more than welcome.

Thanks!