function changeClass(objName)
{
	  var selected = objName;
      var news = document.getElementById("news");
      var events = document.getElementById("events");
      var podcasts = document.getElementById("podcasts");
      var news_sub = document.getElementById("news_sub");
      var events_sub = document.getElementById("events_sub");
      var podcasts_sub = document.getElementById("podcasts_sub");
      
	  if(selected == "news")
	  {
	  	news.className="current";
	  	events.className="select";
	  	podcasts.className="select";
	  	
	  	news_sub.className="sub_active";
	  	events_sub.className="sub";
	  	podcasts_sub.className="sub";
	  }
	  else if(selected == "events")
	  { 
	  	news.className="select";
	  	events.className="current";
	  	podcasts.className="select";
	  	
	    news_sub.className="sub";
	  	events_sub.className="sub_active";
	  	podcasts_sub.className="sub";
	  }
	  else if(selected == "podcasts")
	  {
	  	news.className="select";
	  	events.className="select";
	  	podcasts.className="current";
	  	
	    news_sub.className="sub";
	  	events_sub.className="sub";
	  	podcasts_sub.className="sub_active";
	  }
}