<script type="text/javascript">
function setScrollbar3dLightColor()
document.body.style.scrollbar3dLightColor="blue";
<input type="button" onclick="setScrollbar3dLightColor()" value="Set Scrollbar3dLightColor" />
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>
<p>An example paragraph</p>