get-table-keys-values.js

var getText = function (node) {
    var span = node.querySelector('span');
    if (span) {
        return span.innerHTML;
    }
    return node.innerHTML;
};

var doc = document.getElementsByTagName('iframe')[0].contentWindow.document;
var wrap = doc.getElementById('u31');
console.log(wrap.childNodes);
var keys = [];
var values = [];
Array.prototype.forEach.call(wrap.children, function (child, index) {
    var text = getText(child);
    if (index % 2 === 0) {
        keys.push(text)
    } else {
        values.push(text);
    }
});
console.log(keys.join('\n'));
console.log(values.join('\n'));