var areaGroups;
function load_areaGroups(url,field,sf,ci) 
{
	// branch for native XMLHttpRequest object
	if (window.XMLHttpRequest) {
		requrl = url+'&area='+field+'&sf='+sf+'&ci='+ci;
		areaGroups = new XMLHttpRequest();
		areaGroups.onreadystatechange = proc_areaGroups;
		areaGroups.open("GET", requrl, true);
		areaGroups.send(null);
	// branch for IE/Windows ActiveX version
	} else if (window.ActiveXObject) {
		areaGroups = new ActiveXObject("Microsoft.XMLHTTP");
		if (areaGroups) {
			areaGroups.onreadystatechange = proc_areaGroups;
			areaGroups.open("GET", requrl, true);
			areaGroups.send();
		}
	}
}	

function proc_areaGroups() 
{
	if (areaGroups.readyState == 4) {
		if (areaGroups.status == 200) {
			//alert (areaGroups.responseText);
			document.getElementById('towns').innerHTML = areaGroups.responseText;
			//var test = loadPropertyType.responseText.split('|');
			//document.getElementById('SK').value = test[0];
			//document.getElementById('skmessage').innerHTML = test[1];
		} else {
			alert("There was a problem retrieving the XML data");
		}
	}
}