var xmlhttp

function sendMail(mail, name, content, lang)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }
var url="mail.php";
var params="mail="+mail+"&name="+name+"&content="+content+"&lang="+lang;
xmlhttp.open("POST",url,true);

xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.setRequestHeader("Content-length", params.length);
xmlhttp.setRequestHeader("Connection", "close");

xmlhttp.onreadystatechange=stateChanged;

xmlhttp.send(params);
}

function stateChanged()
{
if (xmlhttp.readyState==4 && xmlhttp.status == 200)
  {
  document.getElementById("mailResult").innerHTML=xmlhttp.responseText;
  }
 else
  {
  document.getElementById("mailResult").innerHTML='Please wait...';
  }
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}