var xmlHttp;

function showResult(str,file) {
	if (str.length==0) { 
		 document.getElementById("livesearch").
		 innerHTML="";
		 document.getElementById("livesearch").
		 style.border="0px";
		 return;
	}
	 
	xmlHttp=GetXmlHttpObject()	
	if (xmlHttp==null) {
		alert ("Browser does not support HTTP Request");
		return;
	}
	
	var url="js/"+file;
	url=url+"?qs="+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("livesearch").innerHTML=xmlHttp.responseText;
		 document.getElementById("livesearch").style.display="block";
		 document.form1.postcode_id.value=document.form1.pc_id.options[document.form1.pc_id.selectedIndex].value;
	 } 
}

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;
}