function urlencode (str) {
    str = (str+'').toString();
    return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').
      replace(/\)/g, '%29').replace(/\*/g, '%2A').replace(/%20/g, '+');
}

function ajaxFunction(ajaxurl, targetdivname, ubb_text)
{
var xmlHttp;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    try
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch (e)
      {
      alert("Your browser does not support AJAX!");
      return false;
      }
    }
  }

  function stateChanged() 
  { 
    if (xmlHttp.readyState==4)
    { 
      document.getElementById(targetdivname).innerHTML=xmlHttp.responseText;
    }
  }
  
  xmlHttp.onreadystatechange=stateChanged;
  
  var params = "text=" + urlencode(ubb_text);
  xmlHttp.open("POST", ajaxurl, true);
  
  //Send the proper header information along with the request
  xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  xmlHttp.setRequestHeader("Content-length", params.length);
  xmlHttp.setRequestHeader("Connection", "close");
  xmlHttp.send(params);
  }