function processAjax(url) { 
     

    if (window.XMLHttpRequest) { // Non-IE browsers 
      req = new XMLHttpRequest(); 
      req.onreadystatechange = targetDiv; 
      try { 
        req.open("GET", url, true); 
      } catch (e) { 
        alert(e); 
      } 
      req.send(null); 
    } else if (window.ActiveXObject) { // IE 
      req = new ActiveXObject("Microsoft.XMLHTTP"); 
      if (req) { 
        req.onreadystatechange = targetDiv; 
        req.open("GET", url, true); 
        req.send(); 

      } 
    } 
} 

function targetDiv() { 
    if (req.readyState == 4) { // Complete 
          if (req.status == 200) { // OK response 
              document.getElementById("boxleft").innerHTML = req.responseText; 
          } else { 
            alert("Problem: " + req.statusText); 
          } 
    } 
}
// JavaScript Document