function topic_main_load(topic_num, s_num) {
    var o_data = document.getElementById('main_topic');
    if(s_num) {
        var url = "/api/thread/" + String(topic_num) + "?render=1&num=" + s_num;
    } else {
        var url = "/api/thread/" + String(topic_num) + "?render=1";
    }
    var url_2 = "/api/markup";
    var n_data = "";
    var num = 1;

    var xhr = new XMLHttpRequest();
    xhr.open("GET", url, true);
    xhr.send(null);

    var xhr_2 = new XMLHttpRequest();
    xhr_2.open("GET", url_2, true);
    xhr_2.send(null);

    xhr.onreadystatechange = function() {
        if(xhr.readyState === 4 && xhr.status === 200) {
            var t_data = JSON.parse(xhr.responseText);
            var t_plus_data = '';

            for(var key in t_data) {
                n_data += t_data[key]['data'];
                num = key;

                t_plus_data += t_data[key]['plus_data'].replace(/<script>/g, '').replace(/<\/script>/g, '');
            }

            o_data.innerHTML = n_data;
            eval(t_plus_data);
            if(window.location.search === "?where=bottom") {
                document.getElementById(num).focus();
            }
            
            if(!s_num) {
                topic_plus_load(topic_num, String(Number(num) + 1));
            }
        }
    }
}