var xmlHttp

function showUser(gebruiker) { 
  xmlHttp=GetXmlHttpObject()
  if (xmlHttp==null) {
    alert ("Browser does not support HTTP Request")
    return
  }        
  var url="contact_km_get.php"
  url=url+"?a="+gebruiker
  url=url+"&sid="+Math.random()
  xmlHttp.onreadystatechange=stateChanged 
  xmlHttp.open("GET",url,true)
  xmlHttp.send(null)
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
   { 
   document.getElementById("TransportInfo").innerHTML=xmlHttp.responseText 
   } 
} 

function GetXmlHttpObject()
{
  var xmlHttp=null;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    }
  return xmlHttp;
}