rror.fromTextArea(elEditor.querySelector("textarea"), { 
    lineWrapping: true,
    lineNumbers: true 
});

function get(url, callback) {    
    req.onload = function () {
        callback(req.responseText);
    };
    req.open('GET', url, true);
    req.send(null);
}

function post(url, data, callback) {
    req.onload = function () {
        callback(req.responseText);
    };
    req.open('POST', url, true);
    //req.setRequestHeader('Content-Type', 'application/json');
    //req.send(JSON.stringify(da