var ToggleField = Class.create(); ToggleField.prototype = { initialize: function() { var rules = {}; rules['#' + this.id + ' .triggerMore'] = { onclick: function(e) { Element.toggle(this); Event.stop(e); return false; }.bind(this) }; rules['#' + this.id + ' .triggerLess'] = { onclick: function(e) { Element.toggle(this); Event.stop(e); return false; }.bind(this) }; Behaviour.register(rules); if(Element.hasClassName(this, 'startClosed')) { Element.toggle(this); } }, toggle: function() { var lessDivs = $$('#' + this.id + ' .contentLess'); if(lessDivs) Element.toggle(lessDivs[0]); var moreDivs = $$('#' + this.id + ' .contentMore'); if(moreDivs) Element.toggle(moreDivs[0]); } } ToggleField.applyTo('div.toggleField');