function Ajax() {

	this.createAjax = function() {
		var http_request = false;
		if (window.XMLHttpRequest) { // Mozilla, Safari,...
			http_request = new XMLHttpRequest();
			if (http_request.overrideMimeType) {
				http_request.overrideMimeType('text/html');
			}
		} 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 http_request;
	}

	this.send = function(data) {
		var request = this.createAjax();
		request.open("POST", "getlist.php");
		request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		request.onreadystatechange = function() { return Ajax.response(request); }
		request.send(data);
	}
}

Ajax.response = function(request) {
	var state = (request == null ? 0 : request.readyState);
	if (state == 4 && request.status == 200) {
		var text = request.responseText;
		eval("var arr = "+text.substring(0));

		updateServerList(arr);
	}
}

var ajax = new Ajax();