/* home page postcode locator document */
var updateMapTimeout;
var station;

function getStation()
{
  clearTimeout(updateMapTimeout);
	document.getElementById('loading').style.visibility = "visible";

	var xmlHttp;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch(e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e)
			{
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}

	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
		  station = xmlHttp.responseText;
			updateMapTimeout = setTimeout("updateMap();",800);
		}
	}

	url = 'postcode_search.php?postcode='+document.getElementById('postcodefld').value;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function updateMap()
{
  document.getElementById('loading').style.visibility = 'hidden';
  updateFlashMap(station);
}