jQuery plugin jCarousel gives "No width/height set for items ..." error on Safari

Need to make sure that the container that jCarousel is applied to is visible (e.g., not styled to display:none) when the carousel is initialized (got the clue from this discussion on drupal.org). In the case of a couple carousels activated by a tabs (implemented also with jQuery), initialize the hidden carousel only when the tab is activated, say, in a callback function like this:

function myTabCallbackOnActive() {
  // Find carousel object from active tab
  var activetab = $('#blahblah .selected a').attr('href');
  var carousel = $(activetab + '.jcarouselstrip').data('jcarousel');
  if (carousel == null)  {
    initCarousel(activetab);
    carousel = $(activetab + '.jcarouselstrip').data('jcarousel');
  }
  // Do other actions as needed for now-active carousel.
  // For example, go to the first item:
  carousel.scroll(1,false);
}