var xmlHttp
function showstate(str)
{ 

id = "state";
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
 
var url="getstate.php"
url=url+"?q="+str
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("state").innerHTML = xmlHttp.responseText ;
 } 
}


function GetXmlHttpObject(handler){

var objXmlHttp=null;
if (navigator.userAgent.indexOf("Opera")>=0)
{
alert("This example doesn't work in Opera") ;
return ;
}

if (navigator.userAgent.indexOf("MSIE")>=0)
{
var strName="Msxml2.XMLHTTP";
if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
{
strName="Microsoft.XMLHTTP";
}
try
{
objXmlHttp=new ActiveXObject(strName);
objXmlHttp.onreadystatechange=handler ;
return objXmlHttp;
}
catch(e)
{
alert("Error. Scripting for ActiveX might be disabled");
return;
}
}
if (navigator.userAgent.indexOf("Mozilla")>=0)
{
objXmlHttp=new XMLHttpRequest();
objXmlHttp.onload=handler;
objXmlHttp.onerror=handler;
return objXmlHttp;
}

}