var xmlHttp = null;

function zoekmilieulijst(f) {
	if (f.q.value == '') {
		document.getElementById("zoektabel").style.display = 'none';
		document.getElementById("milieulijst_resultaat").innerHTML = '';
		return;
	}
	try {
		xmlHttp = new XMLHttpRequest();
	} catch (e) {
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	if (xmlHttp == null) return;
	var url = "ajaxlijst.asp";
	url = url + "?s=" + escape(f.s.value);
	url = url + "&q=" + escape(f.q.value);
	url = url + "&sid=" + Math.random();
	xmlHttp.onreadystatechange = function () { 
		if (xmlHttp.readyState == 4) { 
			document.getElementById("milieulijst_resultaat").innerHTML = xmlHttp.responseText;
			document.getElementById("zoektabel").style.display = '';
		}
	};
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);
}