window.addEvent('domready', function() {
    $('custserv').addEvent('click', function() {
        $('custserv_page').addClass('active');
        $('wholesale_page').removeClass('active');
        $('personalshopping_page').removeClass('active');
    });
    $('wholesale').addEvent('click', function() {
        $('custserv_page').removeClass('active');
        $('wholesale_page').addClass('active');
        $('personalshopping_page').removeClass('active');
    });
    $('personalshopping').addEvent('click', function() {
        $('custserv_page').removeClass('active');
        $('wholesale_page').removeClass('active');
        $('personalshopping_page').addClass('active');
    });
});