function expandCollapse(){
    //expand all
    $('expand').addEvent('click', function(){
        var myAccordion = new Accordion('li.atStart', 'div.atStart ', {
            onActive: function(toggler, element){
                toggler.setStyle('color', '#000');
                toggler.setStyle('cursor', 'pointer');
                toggler.setStyle('cursor', 'hand');
                toggler.setStyle('font-weight', 'bold');
            },
            onBackground: function(toggler, element){
                toggler.setStyle('color', '#176376');
                toggler.setStyle('cursor', 'pointer');
                toggler.setStyle('cursor', 'hand');
                toggler.setStyle('font-weight', 'normal');
            }
        });
        myAccordion.showAll();
    });
    //collapse all
    $('collapse').addEvent('click', function(){
        var myAccordion = new Accordion(' li.atStart', 'div.atStart', {
            onActive: function(toggler, element){
                toggler.setStyle('color', '#000');
                toggler.setStyle('cursor', 'pointer');
                toggler.setStyle('cursor', 'hand');
                toggler.setStyle('font-weight', 'bold');
            },
            onBackground: function(toggler, element){
                toggler.setStyle('color', '#176376');
                toggler.setStyle('cursor', 'pointer');
                toggler.setStyle('cursor', 'hand');
                toggler.setStyle('font-weight', 'normal');
            }
        });
        myAccordion.hideAll();
    });
}