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<a href="javascript:hideshow(document.getElementById('adiv1'))">Option 1</a>
<div id="adiv1" style="font:24px bold; display: block">Option 1 description</div>
<a href="javascript:hideshow(document.getElementById('adiv2'))">Option 2</a>
<div id="adiv2" style="font:24px bold; display: block">Option 2 description</div>
<a href="javascript:hideshow(document.getElementById('adiv3'))">Option 3</a>
<div id="adiv3" style="font:24px bold; display: block">Option 3 description</div>