var prev_id = -1;
var xmlhttp = false;

if (window.XMLHttpRequest) {
	xmlhttp = new XMLHttpRequest();
	xmlhttp.overrideMimeType('text/xml');
} else if (window.ActiveXObject) {
	xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

function load_msg(msg_id, msg_folder) {
	if (!xmlhttp) { return; }

	if (prev_id > -1) {
		document.getElementById("msg"+prev_id).bgColor = "";
	}
	document.getElementById("msg"+msg_id).bgColor = "#aabbcc";
	prev_id = msg_id;

	url = "?function=load_msg&folder=" + msg_folder + "&id=" + msg_id;
	xmlhttp.open("GET", "ajax.py"+url, true);
	xmlhttp.onreadystatechange = function() {
		if (xmlhttp.readyState == 4) {
			//alert(xmlhttp.responseText);
			//alert(xmlhttp.getAllResponseHeaders());
			response = xmlhttp.responseText
			document.getElementById("bottompane").innerHTML = response;
			document.getElementById("msg" + msg_id).style.fontWeight = "normal";
			document.getElementById("bottompane").style.display = "block";
		}
	}
	xmlhttp.send(url)
	return false;
}