jquery tabs not working in ie6-7

/* TABS */
jQuery(document).ready(function($){

$('ul.tabs').each(function(){
    // For each set of tabs, we want to keep track of
    // which tab is active and it's associated content
    var $active, $content, $links = $(this).find('a');

    // Use the first link as the initial active tab
    $active = $links.first().addClass('active');
    $content = $($active.attr('href'));

    // Hide the remaining content
    $links.not(':first').each(function () {
        $($(this).attr('href')).hide();
});

      // Bind the click event handler
      $(this).on('click', 'a', function(e){
        // Make the old tab inactive.
        $active.removeClass('active');
        $content.hide();

        // Update the variables with the new link and content
        $active = $(this);
        $content = $($(this).attr('href'));

        // Make the tab active.
        $active.addClass('active');
        $content.show();

        // Prevent the anchor's default click action
        e.preventDefault();
    });
});
});