function smart_alert()
{
  var sas = document.getElementById("smart_alert_confirm");
  if (sas)
  {
    document.body.removeChild(sas);
    var e = document.getElementById("smart_alert");
    if (e)
    {
      document.body.removeChild(e);
    }
  }
  if (arguments.length > 0)
  {
    var e = arguments[0];
    if (e === null)
    {
      var sac = document.getElementById("smart_alert_confirm");
      if (sac)
      {
        document.body.removeChild(sac);
        var e = document.getElementById("smart_alert");
        if (e)
        {
          document.body.removeChild(e);
        }
      }
    }
    else
    {
      var div = document.createElement("div");
      div.id = "smart_alert";
      var sw = document.body.scrollWidth;
      var sh = document.body.scrollHeight;
      var cw = document.body.clientWidth;
      var ch = document.body.clientHeight;
      var sy = window.pageYOffset;
      var textdiv = document.createElement("div");
      textdiv.id = "smart_alert_message";
      textdiv.className = "obli";
      var table = document.createElement("table");
      var tr = document.createElement("tr");
      var td = document.createElement("td");
      if (typeof(e) == "string")
      {
        var lf = e.indexOf("
");
        if (lf > 0)
        {
          var parts = e.split("
");
          for (var i=0; i<parts.length;i++)
          {
            var text = document.createTextNode(parts[i]);
            if (i<parts.length-1)
            {
              var mytr = document.createElement("tr");
              var mytd = document.createElement("td");
              mytd.appendChild(text);
              mytr.appendChild(mytd);
              table.appendChild(mytr);
            }
            else
            {
              td.appendChild(text);
            }
          }
        }
        else
        {
          var text = document.createTextNode(e);
          td.appendChild(text);
        }
      }
      else if (typeof(e) == "object")
      {
        td.appendChild(e);
      }
      tr.appendChild(td);
      table.appendChild(tr);
        textdiv.id = "smart_alert_confirm";
      if (arguments.length == 1)
      {
        var tr = document.createElement("tr");
        var td = document.createElement("td");
        var b = document.createElement("button");
        b.onclick = new Function("smart_alert(null);");
        td.appendChild(b);
        var ok = document.createTextNode("ok");
        b.appendChild(ok);
        tr.appendChild(td);
        table.appendChild(tr);
      }
      else
      {
        div.onclick = new Function("smart_alert();");
      }
      textdiv.appendChild(table);
      document.body.appendChild(div);
      document.body.appendChild(textdiv);
      var b = div.getBoundingClientRect();
      var p = textdiv.getBoundingClientRect();
      textdiv.style.top =  (( b["bottom"] - b["top"] - p["bottom"] - p["top"])/2) + "px";
      textdiv.style.left = (( p["left"] - p["right"] + b["right"] - b["left"])/2) + "px";
      if (arguments.length > 1)
      {
        if (arguments[1] > 0)
        window.setTimeout("smart_alert();",arguments[1]);
      }
    }
  }
}