Here is my code. Where you see "alert([...]);", an alert pops up. Why doesn't the CSS style change? The 'click' event fires, too!

resolveSideMenuAddress: function () {
    var firstLink = $("#masterHeaderMenu .masterHeaderMenuButton a:first");

    function select(link) {
        alert('i alert');
        link.css({
            'color': '#9a4d9e',
            'cursor': 'default'
        });
        alert('color and cursor not changed');
        link.click(function () {
            alert('click');
            return false;
        });
    }

    if (window.location.pathname === firstLink.attr('href')) {
        alert('i alert');
        select(firstLink);
    }
}

I've tried addClass() and can't change the color of the link that way either.