PHP BUDDY

function Inint_AJAX() 
{

   try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {} //IE
   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} //IE
   try { return new XMLHttpRequest();          } catch(e) {} //Native Javascript
   alert("XMLHttpRequest not supported");
   return null;

}


     var http = Inint_AJAX();
  var url = "example.php";
    var params = "content=1";
    http.open("POST",url+"?"+params, true);

    http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http.setRequestHeader("Content-length", params.length);
    http.setRequestHeader("Connection", "close");
    http.onreadystatechange = function() {//Call a function when the state changes.
 if(http.readyState == 4 && http.status == 200) {
  
  document.getElementById('divid').innerHTML=http.responseText; //retuen value
 }