<script language="JavaScript" type="text/javascript">
<!--
$('#upload1').upload({
          name: 'file',
          method: 'post',
          enctype: 'multipart/form-data',
          action: 'upload.php',
          onSubmit: function() {
                   $('#progress1').text('Отправка файла...');
           },
           onComplete: function(data) {
                 $('#progress1').text('Файл успешно отправлен');
          }
  });
//-->
</script>

$uploaddir = '/var/www/uploads/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
  echo "success";
} else {
  echo "error"; 
}