Hi list, I have the next code. can be done better?

[code[

   var el_back;
   $('main_form').select('*').each(function(el){
      if(el.type=='text' || el.type=='select-one'){
         el.observe('focus', function(evt){evt.element().select()});
         if(el_back){
            el_back.observe('keydown', function(evt){
               var key = evt.which || evt.keyCode;
               if(key==Event.KEY_RETURN){
                  evt.stop();
                  el.focus();
               }
            });
         };
         el_back=el;
      }
   })


-- 
________________________________________
Lo bueno de vivir un dia mas
es saber que nos queda un dia menos de vida

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