derek-dchu

/**
* Swap two elements within a multiple selector with index a and b
* @param a: index of the first element
* @param b: index of the second elemnt
*
*  DEMO at http://jsfiddle.net/derekhu/8rauhuxh/#base
*/
function swapElement(elements, indexA, indexB) {
  // Make sure indexA is smaller than indexB
  if (indexA > indexB) {