var xmlHttpCareer

function showPosition(str)
{ 
document.getElementById("txtHint").style.display="none";
document.getElementById("txtLoading").style.display="";
xmlHttpCareer=GetXmlHttpObject();
if (xmlHttpCareer==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url;
url ="getposition.php";
url=url+"?q="+str;
xmlHttpCareer.onreadystatechange=stateChanged;
xmlHttpCareer.open("GET",url,true);
xmlHttpCareer.send(null);
}

function stateChanged() 
{ 
if (xmlHttpCareer.readyState==4)
{ 
document.getElementById("txtHint").innerHTML=xmlHttpCareer.responseText;
document.getElementById("txtLoading").style.display="none";
document.getElementById("txtHint").style.display="";
}
}

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