Bootstrap 3.0 - no javascript. This solves a number of accessibility issues that may arise with Javascript disabled - it may cause a few issues too :)

nojs.less

//
// no-js
// --------------------------------------------------

// Modernizer.js provides us a class to use if Javascript is disabled.
// (https://github.com/Modernizr/Modernizr/blob/master/src/setClasses.js#L9)


// Bootstrap .collapse - no javascript?, display it as block. Anything using .collapse 'expanded' by default.
.no-js .collapse {
  display: block;
}

// Bootstrap .dropdown - no javascript?, provide hover alternative
.no-js .dropdown:hover .dropdown-menu {
  display: block;
}