var xmlHttp;

function refreshResults(npa, rc, state) {
	xmlHttp = GetXmlHttpObject();
	if (xmlHttp == null) {
		alert ("Your browser does not support HTTP Request");
		return;
	}

	var url = "/numbers/findnumbers.php";
	url = url + "?npa=" + npa;
	url = url + "&rc=" + rc;
	url = url + "&state=" + state;
	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("results").innerHTML = xmlHttp.responseText;
	}
}

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;
}