window.addEvent('domready', function(){
    new FormCheck('form_contacto');
    $$('input', 'textarea').each(function(el){
        if (el.get('value') != 'enviar'){
            el.store('valor', el.get('value'));
            el.addEvent('focus', function(){
                this.set('value', '');
            });
            el.addEvent('blur', function(){
                if (this.get('value') == '')
                    this.set('value', this.retrieve('valor'));
            });
        }
    });
});

function checkdefault(el){
  if(el.get('value') == el.get('title')){
    el.errors.push('Por favor complete el campo.');
    return false;
  }
  isLock = false;
  return true;
}