nly buttons that have
been created in the constructor can be displayed. This method will
not create a new button.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>id</em>&nbsp;</td><td> Button identifier.

<tr><td></td><td valign="top"><em>state</em>&nbsp;</td><td> true display the button(s).
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="showButtonSeparator"></a>
<div class="memitem">
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