function soNav() {
  if($('#nav').length) {
    var active = $("#nav").find("li.active").find("a").attr("href")
    var so_nav = new SWFObject("/flash/nav.swf", "flash-nav", "870", "32", "9.0.28", "#5A5A58");
    so_nav.addVariable("active", active);
    so_nav.write('nav');
  }
}

$(document).ready(soNav);