function toggleDay(id){
  var names=["monday","tuesday","wednesday","thursday","friday"];  

  for ( var i=0; i<names.length; i++ ) {
    var name = names[i];
    var e=document.getElementById(name);

    if(name!=id){
      e.style.display="none";
      document.getElementById(name+'_img').src="/template/shared_content/network_promo/cw/widget/images/gray/"+name+".jpg";
    }
    else {
      e.style.display="block";
      document.getElementById(name+'_img').src="/template/shared_content/network_promo/cw/widget/images/blue/"+name+".jpg";
    }
  }
}