$(document).ready(function(){
        $("test").click(function(){
                var $content = $('#callouts p');
                var currentSize = $content.css('font-size');
                var num = parseFloat(currentSize, 10);
                var unit = currentSize.slice(-2);
                if (this.id == 'larger'){
                        num = num * 1.4;
                } else if (this.id == 'smaller'){
                        num = num / 1.4;
                }
                $content.css('font-size', num + unit);

                return false;
});

});