#container.expanded .expander {
    padding-left: 13px;
    background-position: left center;
    background-repeat: no-repeat;
    background-image: url(images/expanded.gif);
}

#container.collapsed .expander {
    padding-left: 13px;
    background-position: left center;
    background-repeat: no-repeat;
    background-image: url(images/collapsed.gif);
}
.content {display:none;}