#default_text {
    color : #666;
    font-weight: bold;
    top: 193px;
    left: 15px;
    position : absolute;
    width : 480px;
    height : 90px;
    visibility : visible;
    line-height: 18px;
}

#astro_text, #earth_text, #bio_text, #human_text {
    color : #666;
    font-weight: bold;
    top: 193px;
    left: 15px;
    position : absolute;
    width : 480px;
    height : 90px;
    visibility : hidden;
    line-height: 18px;
}