function animazione_flash() {
  document.write("<object type='application/x-shockwave-flash' data='http://www.bybla.com/flash/intro.swf' width='760' height='420' id='intro'> ");
  document.write("<param name='movie' value='http://www.bybla.com/flash/intro.swf' /> ");
  document.write("<param name='quality' value='high' /><param name='wmode' value='transparent' /><param name='bgColor' value='#000000' />");
  document.write("</object> ");
}