var http_request = false;

var div_id;
var xml_text;

function makeRequest(url, query_value, div_id_local, xml_text_local, default_value) {
	div_id = div_id_local;
	xml_text = xml_text_local;
	http_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
			
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	
	if (!http_request) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
		return false;
	}
	
	http_request.onreadystatechange = alertContents;
	http_request.open('GET', '/' +url+'.php?query_value='+query_value, true);
	http_request.send(null);
}

function alertContents() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			var xmldoc = http_request.responseText;
			document.getElementById(div_id).innerHTML = xmldoc;		
		} else {
			alert('There was a problem with the request.');
		}
	}
}

function fieldRequest(url, query_value, div_id_local, xml_text_local, default_value)   {
	makeRequest(url, query_value, div_id_local, xml_text_local, default_value);
}