// JavaScript Document
var xmlHttp

function showSuburb(phpFile, post_code){
	var url="/jscript/ajax/" + phpFile + "?postcode=" + post_code
	xmlHttp=GetXmlHttpObject(stateChanged)
	xmlHttp.open("GET", url, true)
	xmlHttp.send(null)
}

function stateChanged(){
	if(xmlHttp.readyState==1){
		document.getElementById("suburbDropDown").innerHTML="Loading ..."
	}
	if(xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){
		document.getElementById("suburbDropDown").innerHTML=xmlHttp.responseText
	}
}

function GetXmlHttpObject(handler){
	var objXmlHttp=null
	
	if(navigator.userAgent.indexOf("Opera")>=0){
		alert("This page does not work properly 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
	}
}