var accordion = new Accordion('h5.atStart', 'div.atStart', {
                    opacity: false,
                    alwaysHide: true,
                    display: -1,                    
                    onActive: function(toggler, element){
                        /*toggler.setStyle('color', '#FFFFFF');
                        toggler.setStyle('background-image','url');*/
                        toggler.className='toggler_protein_on';
                    },
                 
                    onBackground: function(toggler, element){
                        /*toggler.setStyle('color', '#474747');*/
                        toggler.className='toggler_protein';
                    }
                }, $('accordion'));