gistfile1.js

var scribd_doc;

function showScribd(link) {
  scribd_doc = new scribd.Document(link.id, link.rel);
  scribd_doc.addParam('height', 400);
  scribd_doc.addParam('width', 620);
  scribd_doc.addParam('page', 1); 
  scribd_doc.write('scribd_preview');
  $('scribd').show();
}

Event.observe(window, 'load', function() {
  $$('a.scribd').each(function(link) {
    link.observe('click', function(event) {
      showScribd(link);
      Event.stop(event);
    });
  });
});