Any help how I can add an action to link this plugin image to an external site?............

<plugin name="signature" url="$(STYLEDIR)/signature.png" align="leftbottom" width="205" x="0" y="0" keep="true" zorder="6" handcursor="true" enabled="true"/>



here are some codes that I think is relevant but I dont know if this can help. I got this from the same xml file.............


<plugin name="helpScreen" align="center" customColor="true" keep="true" onclick="closeHelp();" url="$(HELPSCREEN)" visible="false"/>
<action name="displayHelp">
set(plugin[helpScreen].visible,true);
set(plugin[showhelp].onclick,closeHelp()
</action>
<action name="closeHelp">
set(plugin[helpScreen].visible, false);
set(plugin[showhelp].onclick, displayHelp()
</action>