function tasksPreview(text) {
  var content = '<h2>Tasks preview</h2>';
  content += '<div id="tasks_preview" style="width:660px; height:' + ($(window).height() / 100) * 70 + 'px;"><img src="/images/wikiwords/loading.gif"></div>';
  $.prompt(content, {
    buttons: {
      'Close': false,
    },
    top: '5%',
    loaded: function () {
      $.ajax({
        url: '/ajax/ajax_support_process.php',
        data: {
          action: 'tasks_preview',
          tasks: text
        },
        success : function (html) {
          $("#tasks_preview").html(html);
        }
      });
    }
  });
}