<wicket:extend xmlns:wicket="http://wicket.apache.org">

This example demonstrates a AjaxTimerBehavior as well as updating of multiple components on the page.
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This AjaxTimerBehavior can be attached to any component and will recieve a callback every x number of milliseconds.
Within this callback it is very simple to update any number of components via ajax.

<br/><br/>
<table cellspacing="0" cellpadding="2">
<tr>
    <td style="align:right;">Los Angeles:</td>
    <td><span wicket:id="la">[la clock]</span></td>
</tr>
<tr>
    <td style="align:right;">New York:</td>
    <td><span wicket:id="ny">[ny clock]</span></td>
</tr>
<tr>
    <td style="align:right;">London:</td>
    <td><span wicket:id="london">[london clock]</span></td>
</tr>
<tr>
    <td style="align:right;">Prague:</td>
    <td><span wicket:id="prague">[prague clock]</span></td>
</tr>
<tr>
    <td style="align:right;">Moscow:</td>
    <td><span wicket:id="moscow">[moscow clock]</span></td>
</tr>
</table>

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<a wicket:id="stop">STOP</a> | <a wicket:id="restart">RESTART</a> 

</wicket:extend>