You can always manually add CSS that hides the expandable contents. Lets say you have the following two contents:
Inside the HEAD section of your page, you'd target the "switchgroup1" class:
<div id="bobcontent1" class="switchgroup1">
and power to web documents. It is purely client side, and runs completely on the client's browser and computer.
<div id="bobcontent2" class="switchgroup1">
The former is a compiled language while the later is a scripting language.