Event.observe(document, 'dom:loaded', function() {  
    // for every element with an toggler class...  
    $$('.toggle').each(function(element) {  
       
        // put on an event listener of the click type  
        Event.observe(element, 'click', function(event){   
            
            // stop the default link behaviour  
            Event.stop(event);  
            this.down().toggleClassName('show'); 
            Effect.toggle(this.next(), 'blind', {duration: .5});
        }, false);  
           
    });  
});