[danik.js]

 function createRequest()
    {
      try
      {
        request = new XMLHttpRequest();
      } catch(trymicrosoft)
        {
          try
          {
            request = new ActiveXObject("Msxm12.XMLHTTP");
          } catch (othermicrosoft)
            {
              try
              {
                request = new ActiveXObject("Microsoft.XMLHTTP");
              } catch(failed)
                {
                   request = null; 
                }
            }
        }
     
      if (request == null)
        alert("Error creating request object!");       
    }

Что это такое? Что делает эта простыня?