I am using jquery tabs but default it is working on my site but once a part of my site is reloading tabs not working.

Please check this url:
http://www.emptask.com/professionalw...otein-isolate/

click on tabs it is working first time, but once you change WEIGHT attribute from dropdown, tabs not working.

Code:
jQuery(document).ready(function($){
  $(".menu  li").click(function(e){
    switch(e.target.id){
      case "news":
        //change status & style menu
        $("#news").addClass("active");
        $("#tutorials").removeClass("active");
        $("#links").removeClass("active");
        $("#sales").removeClass("active");
        $("#share").removeClass("active");
        //display selected division, hide others
        $("div.news").fadeIn();
        $("div.links").css("display", "none");
        $("div.tutorials").css("display", "none");
        $("div.sales").css("display", "none");
        $("div.share").css("display", "none");
      break;
      
        case "tutorials":
        //change status & style menu
        $("#news").removeClass("active");
        $("#tutorials").addClass("active");
        $("#links").removeClass("active");
        $("#sales").removeClass("active");
        $("#share").removeClass("active");
        //display selected division, hide others
        $("div.tutorials").fadeIn();
        $("div.news").css("display", "none");
        $("div.links").css("display", "none");
        $("div.sales").css("display", "none");
        $("div.share").css("display", "none");
      break;
      
      case "links":
        //change status & style menu
        $("#news").removeClass("active");
        $("#tutorials").removeClass("active");
        $("#links").addClass("active");
        $("#sales").removeClass("active");
        $("#share").removeClass("active");
        //display selected division, hide others
        $("div.links").fadeIn();
        $("div.news").css("display", "none");
        $("div.tutorials").css("display", "none");
        $("div.sales").css("display", "none");
        $("div.share").css("display", "none");
      break;
          
        case "share":
        //change status & style menu
        $("#news").removeClass("active");
        $("#tutorials").removeClass("active");
        $("#links").removeClass("active");
        $("#sales").removeClass("active");
        $("#share").addClass("active");
        //display selected division, hide others
        $("div.share").fadeIn();
        $("div.news").css("display", "none");
        $("div.tutorials").css("display", "none");
        $("div.links").css("display", "none");
        $("div.sales").css("display", "none");
      break;
      
      case "sales":
        //change status & style menu
        $("#news").removeClass("active");
        $("#tutorials").removeClass("active");
        $("#links").removeClass("active");
        $("#sales").addClass("active");
        $("#share").removeClass("active");
        //display selected division, hide others
        $("div.sales").fadeIn();
        $("div.news").css("display", "none");
        $("div.tutorials").css("display", "none");
        $("div.links").css("display", "none");
        $("div.share").css("display", "none");
      break;
    }
    //alert(e.target.id);
    return false;
  });
});
I am including this file and jquery file on template file.

Please help me