context: function addUploadFields(id) {  if (!id) {    id = 'uploadfilebox';  }  var el = $(id);  var span = el.getElementsByTagName('span')[0];  if ('none' == span.style.display) {    // Show the file upload box    span.style.display = 'inline';    // Switch the buttons    $(id + '_attachafile').style.display = 'none';    $(id + '_attachanotherfile').style.display = 'inline';      } else {    // Copy the first file upload box and clear it's value    var newBox = span.cloneNode(true);    newBox.getElementsByTagName('input')[0].value = '';    el.appendChild(newBox);  }}
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