window.addEvent( 'domready', function() { 
    
     $('contact_submit').addEvent( 'click', function() {  

            $('FormaContact').set( 'send', {
                     onRequest: function() {
                         $('FormaContact').setOpacity(0.5);
                         $('FormaContact').addClass('spinner');
                            
                     } ,
                     onComplete: function() {
                         $('FormaContact').removeClass('spinner');
                         $('FormaContact').setOpacity(1);
                         $('update_contact').set('html', this.response.text);
                     }
            } );
            
            $('FormaContact').send();
     } );
} );