function toggle_bio(id) {

    this_bio_div = document.getElementById('bio_'+id);
    //this_arw_div = document.getElementById('arw_'+id);

    if (this_bio_div.style.display == 'block') {
        this_bio_div.style.display = 'none';
        //this_arw_div.src = arrow_1.src;
    } else {
        this_bio_div.style.display = 'block';
        //this_arw_div.src = arrow_open.src;
    }

}

function bio_hide(id) {
    document.getElementById('bio_'+id).style.display = 'none';
    //document."arrow_"+id.src = arrow_close.src;
}

function toggle_agenda(id) {
    this_div = document.getElementById('agenda_'+id);
    if (this_div.style.display == 'block') {
        this_div.style.display = 'none';
    } else {
        this_div.style.display = 'block';
    }
}

/*
arrow_open      = new Image();
arrow_open.src  = "/images/arrow_open.gif";
arrow_close     = new Image();
arrow_close.src = "/images/arrow_close.gif";
arrow_1         = new Image();
arrow_1.src     = "/images/arrow1.gif";
arrow_7         = new Image();
arrow_7.src     = "/images/arrow7.gif";
blank_spacer        = new Image();
blank_spacer.src    = "/images/spacer2.gif";
*/