возможно я слишком малую часть кода привел..
<div id="active_server" style="overflow:visible; margin-bottom:5px;">
<a href="#" onclick="return Index.submit_login('server_ru17');">
<span class="world_button_inactive">Мир 17</span></a>
<p id="show_all_server" style="margin-top:5px;text-align:center">
<a href="#" onclick="$('#show_all_server').hide();$('#inactive_server_list').show();return false">Показать все миры</a></p>
</div>
<div id="inactive_server_list" style="display:none;overflow:visible;margin-bottom:1px;margin-top:10px;clear:both;">
<a href="#" onclick="return Index.submit_login('server_ru7')">
<span class="world_button_inactive">Мир 7</span></a>
<a href="#" onclick="return Index.submit_login('server_ru8')">
<span class="world_button_inactive">Мир 8</span></a>
<a href="#" onclick="return Index.submit_login('server_ru9')">
<span class="world_button_inactive">Мир 9</span></a>
<a href="#" onclick="return Index.submit_login('server_ru10')">
<span class="world_button_inactive">Мир 10</span></a>
<a href="#" onclick="return Index.submit_login('server_ru11')">
<span class="world_button_inactive">Мир 11</span></a>
<a href="#" onclick="return Index.submit_login('server_ru12')">
<span class="world_button_inactive">Мир 12</span></a>
<a href="#" onclick="return Index.submit_login('server_ru13')">
<span class="world_button_inactive">Мир 13</span></a>
<a href="#" onclick="return Index.submit_login('server_ru15')">
<span class="world_button_inactive">Мир 15</span></a>
<a href="#" onclick="return Index.submit_login('server_ru16')">
<span class="world_button_inactive">Мир 16</span></a>
<a href="#" onclick="return Index.submit_login('server_rus1')">
<span class="world_button_inactive">Speed</span></a>