var News = new Class({

    initialize: function() {
    
        var arr_headers = $(document.body).getElements('.item_archive_header');
        var arr_content = $(document.body).getElements('.item_archive_content');
    
        for(var i = 0, ilen = arr_headers.length; i < ilen; i++) {
        
            var elm_header = arr_headers[i];
            var elm_content = arr_content[i];
            
            // hide content
            elm_content.slide('out');

            // add handler to the headers
            elm_header.addEvent('click', this._event_header_click.bindWithEvent(this, elm_content));
        }
    },
    
    _event_header_click: function(obj_event, elm_content) {
    
        $(obj_event.target).toggleClass('open');
        elm_content.slide('toggle');
    }

});