clipboard.js

var Clipboard = {
  copy: function(string) {
    if (!$('_clipboard')) $(document.body).insert(new Element('div', { id: '_clipboard', style: 'position: absolute; left: -999px; top: -999px' }));
      $('_clipboard').update('<embed src="_clipboard.swf" FlashVars="clipboard=' + encodeURIComponent(string) + '" width="0" height="0" type="application/x-shockwave-flash"></embed>');
  }
}