function getSuburbName(str) {
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)  {
	  alert ("Browser does not support HTTP Request");
	  return;
	}
	var url="getsuburbname.php"; 
	url=url+"?q="+str;    //call php file with str variable..
	/*alert(url);*/
	/*url=url+"&sid="+Math.random();*/
	xmlhttp.onreadystatechange=stateChanged1;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function stateChanged1() {
	if (xmlhttp.readyState==4) //requst is complete ..so give respose..
	{
	document.getElementById("txtsuburb").innerHTML=xmlhttp.responseText;   
	}
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}