omfg, what is this

// Generate map
var map = {};
var generate_map = function () {
    for (idx in tvs) {
        tv = tvs[idx];

        if (map[tv.line_tb] == undefined) {
            map[tv.line_tb] = {};
        }

        if (map[tv.line_tb][tv.col_tb] == undefined) {
            map[tv.line_tb][tv.col_tb] = {};
        }

        if (map[tv.line_tb][tv.col_tb][tv.line_cel] == undefined) {
            map[tv.line_tb][tv.col_tb][tv.line_cel] = {};
        }

        if (map[tv.line_tb][tv.col_tb][tv.line_cel][tv.col_cel] == undefined) {
            map[tv.line_tb][tv.col_tb][tv.line_cel][tv.col_cel] = {};
        }

        map[tv.line_tb][tv.col_tb][tv.line_cel][tv.col_cel] = tv;

    }
}

// Generate table
var generate_table = function () {
    var table = document.createElement('table');
    var tbody = document.createElement('tbody');
    table.appendChild(tbody);
    for (tr_tab in map) {
        tr_tab_el = document.createElement('tr');
        for (col_tab in map[tr_tab]) {
            col_tab_el = document.createElement('td');
            table_tab = document.createElement('table');
            tbody_cel = document.createElement('tbody');
            table_tab.appendChild(tbody_cel);
            for (line_cel in map[tr_tab][col_tab]) {
                line_cel_el = document.createElement('tr');
                tbody_cel.appendChild(line_cel_el);
                for (col_cel in map[tr_tab][col_tab][line_cel]) {
                    col_cel_el = document.createElement('td');
                    line_cel_el.appendChild(col_cel_el);
                }
                col_tab_el.appendChild(table_tab);
            }
            tr_tab_el.appendChild(col_tab_el);
        }
        tbody.appendChild(tr_tab_el);
    }
    WHERE.appendChild(table);
}

generate_map();
generate_table();