// AJAX database drop-down menus

var xmlhttp;
function showSub(value,table,areaname,display) {
	xmlhttp = GetXmlHttpObject();
	if(xmlhttp == null) {
		alert ("Your browser does not support HTTP requests.");
		return;
	}
	var url = "/inc/gettypes.php";
	url = url+"?value="+value;
	url = url+"&table="+table;
	url = url+"&areaname="+areaname;
	url = url+"&display="+display;
	url = url+"&sid="+Math.random();
	xmlhttp.onreadystatechange = function(){stateChanged(areaname);};
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}
function stateChanged(areaname) {
	if(xmlhttp.readyState == 4) {
		document.getElementById(areaname).innerHTML = xmlhttp.responseText;
	}
}
function GetXmlHttpObject() {
	// code for IE7+, Firefox, Chrome, Opera, Safari
	if(window.XMLHttpRequest) {
		return new XMLHttpRequest();
	}
	// code for IE6, IE5
	if(window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	}
	return null;
}