function downloadFiles () {
  for (var f = 0; f < arguments.length; f++) {
    if (document.all) {
      var html = '';
      html += '<IFRAME';
      html += ' NAME="buffer' + f + '"';
      html += ' STYLE="display: none;"';
      html += ' SRC="' + arguments[f] + '"></\IFRAME>';
      document.body.insertAdjacentHTML('beforeEnd', html);
    }
    else if (document.layers) {
      open(arguments[f])
    }
    else if (document.getElementById) {
      var iframe = document.createElement('IFRAME');
      iframe.setAttribute('id', 'buffer' + f);
      iframe.setAttribute('name', 'buffer' + f);
      iframe.setAttribute('src', arguments[f]);
      iframe.setAttribute('style', 'visibility: hidden;');
      iframe.setAttribute('style', 'position:absolute;');
      document.body.appendChild(iframe);
    }    
  }
}