BinaryMoon

// Use a timeout so we can ensure any resizing/ transitions are complete. May need to make the duration a little longer.
// This code should be called from the code that makes the hidden widgets visible. For example in the button click event.
// Requires jQuery for a couple of bits - shouldn't be a problem since most WordPress themes use it.
setTimeout(
  function() {

    // Remove any media elements currently initialised.
    // Should change .sidebar-overlay to match the html on your site.
    // This should be some sort of container that holds the hidden widgets.
    // The container is used to ensure widgets in visible sidebars are not affected.