An HTML/Javascript snippet for Ecwid to show preorder links for out of stock products

ecwid_preorder_link.html

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
if (typeof(Ecwid) == 'object') {
  Ecwid.OnAPILoaded.add(function() {
    var preorderLabel = "Preorder";
    var preorderLink = "http://www.example.com/preorder.html";
    var preorderElmClass = "ecwid-preorder-link";
    var preorderElmID = "ecwid_preorder_link";
    var preorderInsertAfter = ".ecwid-productBrowser-details-optionsPanel";

    var preorderElm = jQuery(
      '<a>',
      {
        'id': preorderElmID,
        'class': preorderElmClass,
        'href': preorderLink,
        'text': preorderLabel
      }
    );

    function checkPreorder() {      
      if (jQuery(".ecwid-productBrowser-details-outOfStockLabel").length > 0) {
          preorderElm.insertAfter(jQuery(preorderInsertAfter)).show();          

      } else {
        preorderElm.hide();
      }
    }    

    Ecwid.OnPageLoaded.add(function(page) {
      if ('PRODUCT' == page.type) {
        checkPreorder();
        
        jQuery('.ecwid-productBrowser-details-optionsPanel input[type=radio]').each(function() {
          jQuery(this).click(function() {
            setTimeout(checkPreorder, 500);
          });
        });

        jQuery('.ecwid-productBrowser-details-optionsPanel select').each(function() {
          jQuery(this).change(function() {
            setTimeout(checkPreorder, 500);
          });
        });
      }
    });
  });
}
</script>

Does this snippet still work?