<li><button onclick="callbinder('UNICENS','setvol', {channel:'master', volume: 255})">Set Master Volume to 255</button></li>
<li><button onclick="callbinder('UNICENS','setvol', {channel:'master', volume: 200})">Set Master Volume to 200</button></li>
<li><button onclick="callbinder('UNICENS','setvol', [[0,200], [1,255]])">Set left=200 right=250</button></li>
<li><button onclick="callbinder('UNICENS','setvol', {channel:'master', volume: 255})">Set Master Volume to 255</button></li>
<li><button onclick="callbinder('UNICENS','setvol', {channel:'master', volume: 200})">Set Master Volume to 200</button></li>
<li><button onclick="callbinder('UNICENS','setvol', [[0,200], [1,255]])">Set left=200 right=250</button></li>