- Select and de-select shapes onclick and with direct callback.
Example: <a href="javascript:void(0);" onClick="mouseclick(null,document.getElementById('shapesid'));">Toggle shape</a>

- Highlight area's using a external mouseover link.
Example: <a href="javascript:void(0);" onMouseOver="mouseclick(null,document.getElementById('shapeid'));" onMouseOut="mouseclick(null,document.getElementById('shapeid'));">Highlight shapeid</a>

- Link shapes with the linked attribute. Every shape with the same linked value will be turned on and off simultaneous
Example: class="{alwaysOn:true,linked:1}"

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