$(document).ready(function(){
 
   // show first tab content
   $("#page_quicknav_content .seco_page_quicknav_tabcontent:first").show();
 
   // bind tab client-side functionality
    $("#page_quicknav_tabs div a").bind("click", function(e){
      //reset tab classes and set class on current tab
        $("#page_quicknav_tabs div").removeClass("seco_on");  
        $(this).parent("div").addClass("seco_on");        
      //hide visible content and show current tab
        $(".seco_page_quicknav_tabcontent").hide();
        $("#quicknav_content_"+$(this).attr("id").substring(13)).show();
    });   
    
 });