function toggle(obj){

   for (var i=1; i<obj.options.length; i++){
      var opt = obj.options[i];
      var div = document.getElementById( opt.value );
      //alert(obj.selectedIndex);
      //alert(opt.value);
      div.style.display = 'none';

   }

   if (obj.selectedIndex != 0 ){
      var opt = obj.options[obj.selectedIndex];
      var div = document.getElementById( opt.value );
      //alert(obj.selectedIndex);
      //alert(opt.value);
      div.style.display = 'block';
   }
}

var RecaptchaOptions = {
      theme : 'blackglass'
};