function getText(selector) {
        return $(selector).map(function() {
            return $(this).text();
        }).toArray();
    }
Convenience function - find all tags on the page matching the given
selector (or jQuery object) and return inner text for each
@name _pjs.getText
@param {String|jQuery} selector      Selector or jQuery object to find elements
@return {String[]}                   Array of text contents