var cat_comments = {

        '#messageSaveForm' : function( el ) {

            el.validateForm = function() {
                el.canSubmit = true;
               
                if ( trim( $('name').value ) == ''  && el.canSubmit ) {
                    $('warning').innerHTML = 'Įrašykite vardą.';
                    $('warning').show();
                    $('name').addClassName( 'error' );
                    el.canSubmit = false;
                }
                
                if ( trim( $('text').value ) == ''  && el.canSubmit ) {
                    $('warning').innerHTML = 'Kokia Jūsų nuomonė?';
                    $('warning').show();
                    $('text').addClassName( 'error' );
                    el.canSubmit = false;
                }

                return el.canSubmit;
            }

            el.onsubmit = el.validateForm;
        },
        
        input : function( el )  {
            el.onclick = function() {
                el.removeClassName( 'error' );
                $('warning').hide();
            }
        }
                
    };
    Behaviour.register( cat_comments );