Problem with simple jQuery Tabs

I have a very simple jquery tabs functions that looks like this :

$(document).ready(function() {

    //Default Action
    $(".tab_content").hide(); //Hide all content
    $("ul.tabs li:first").addClass("active").show(); //Activate first tab
    $(".tab_content:first").show(); //Show first tab content

    //On Click Event
    $("ul.tabs li").click(function() {
        $("ul.tabs li").removeClass("active"); //Remove any "active" class
        $(this).addClass("active"); //Add "active" class to selected tab
        $(".tab_content").hide(); //Hide all tab content
        var activeTab = $(this).find("a").attr("href"); //Find the rel attribute value to identify the active tab + content
        $(activeTab).fadeIn(); //Fade in the active content
        return false;
    });

});

and the HTML for it is :

<div class="container">
  <ul class="tabs">
    <li><a href="#tab1">Tab 1</a></li>
    <li><a href="#tab2">Tab 2</a></li>
  </ul>
  <div class="tab_container">
    <div id="tab1" class="tab_content">
      <h2>Content</h2>
    </div>
    <div id="tab2" class="tab_content">
      <h2>Content</h2>
    </div>
    <div id="tab3" class="tab_content">
      <h2>Content</h2>
    </div>
    <div id="tab4" class="tab_content">
      <h2>Content</h2>
   开发者_Python百科 </div>
  </div>
</div>

What im trying to do here is add another tab navigation, so bacically repat the ul tag with content in it but different class so I can have something like this :

<ul class="tabs">
        <li><a href="#tab1">Tab 1</a></li>
        <li><a href="#tab2">Tab 2</a></li>
</ul>
<ul class="markers">
        <li><a href="#tab1">Tab 1</a></li>
        <li><a href="#tab2">Tab 2</a></li>
</ul>

..and whenever I click on any of the list it will affect

 $("#id").fadeIn("slow");

var activeTab = $(this).find("a").attr("href"); //Find the rel attribute value to identify the active tab + content
$(activeTab).fadeIn(); //Fade in the active content

var activeTab = $(this).find("a.classname").attr("href");