var xmlHttp

function showrds(str)
{
  xmlHttp=GetXmlHttpObject()
  if (xmlHttp==null)
    {
    alert ("Browser does not support HTTP Request")
    return
    }
  var url="/rds.php"
  url=url+"?q="+str
  url=url+"&sid="+Math.random()
  xmlHttp.onreadystatechange=stateChanged
  xmlHttp.open("GET",url,true)
  xmlHttp.send(null)
  setTimeout("showrds()", 5000);
  }
function stateChanged()
{
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 {
 document.getElementById("txtHint").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;
}