var xmlHttp

function showUser(str)
 { //alert(str);
 xmlHttp=GetXmlHttpObject()
 if (xmlHttp==null)
  {
  alert ("Browser does not support HTTP Request")
  return
  } 
 var url="responseIndex.php"
 url=url+"?q="+str
 url=url+"&sid="+Math.random()
 xmlHttp.onreadystatechange=stateChanged 
 xmlHttp.open("GET",url,true)
 xmlHttp.send(null)
 document.form1.hidval.value = str;
 }

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ //alert(xmlHttp.responseText);
	document.getElementById("history_text").innerHTML=xmlHttp.responseText 
}
} 

function GetXmlHttpObject()
 { 
 var objXMLHttp=null
 if (window.XMLHttpRequest)
  {
  objXMLHttp=new XMLHttpRequest()
  }
 else if (window.ActiveXObject)
  {
  objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
  }
 return objXMLHttp
 }