var feedbackCommentSysCallback;
var feedbackCommentSysInsert;
var feedbackCommentSysUpdate;

var feedbackInsertComments = (function (jsonpMainFetchUrl) {
	var jsupdate = false;
	var loaded = false;

	var urlAddParam = function (url, name, value)
	{
		if (url.indexOf('?') >= 0)
			url += '&'+name+'='+value;
		else
			url += '?'+name+'='+value;
		return url;
	}
	jsonpMainFetchUrl = urlAddParam(jsonpMainFetchUrl, 'jsUpdate', 'feedbackCommentSysUpdateBackend');
	jsonpMainFetchUrl = urlAddParam(jsonpMainFetchUrl, 'jsonp', 'feedbackCommentSysCallback');

	feedbackCommentSysCallback = function (data) {
		var docpos = document.getElementById('feedback_comment_sys_insert');
		$(docpos.parentNode).html(data);
	};
	feedbackCommentSysInsert = function () {
		var scriptElem = document.createElement('script');
		scriptElem.setAttribute('type', 'text/javascript');
		scriptElem.setAttribute('src', jsonpMainFetchUrl);
		var loadedCallback = function () {
			if (loaded)
				return;
			loaded = true;
			if (jsupdate) {
				feedbackCommentSysUpdateBackend(jsupdate);
			}
		}
		scriptElem.onload = loadedCallback;
		scriptElem.onreadystate = loadedCallback;
		document.body.insertBefore(scriptElem, document.body.firstChild);
	}
	feedbackCommentSysUpdate = function (jsondata) {
		if (loaded) {
			feedbackCommentSysUpdateBackend(jsondata);
		} else
			jsupdate = jsondata;
	}

	/*
	 * Delay until after onload
	 */
	var onloadEvent = function () {
		window.setTimeout(feedbackCommentSysInsert, 0);
	}
	if (window.addEventListener)
		window.addEventListener('load', onloadEvent, false);
	else if (window.attachEvent)
		window.attachEvent('onload', onloadEvent);
	else
		onloadEvent();
});

feedbackUpdateNodeData = function (jsondata) {
	feedbackCommentSysUpdate(jsondata);
}