// Load this script when page loads
$(document).ready(function () {
    // Set up a listener so that when anything with a class of 'tab' 
    // is clicked, this function is run.
    $('.tab').click(function () {

        // Remove the 'active' class from the active tab.
        $('#tabs_container > .tabs > li.active').removeClass('active');

        // Add the 'active' class to the clicked tab.
        $(this).parent().addClass('active');

        // Remove the 'tab_contents_active' class from the visible tab contents.
        $('#tabs_container > .tab_contents_container > div.tab_contents_active').removeClass('tab_contents_active');

        // Add the 'tab_contents_active' class to the associated tab contents.
        $(this.rel).addClass('tab_contents_active');

        return false;
    });
});