A relatively sane onClick helper (Webkit only), for e.g. Node-Webkit work. Add additional prefixed versions of `matchesSelector` for further browser compat.

onClick.js

function onClick(selector, fn) {
  document.addEventListener('click', function(e) {
    if ( _matchesSelector(e.target, selector) ) fn(e);
  }, false);
}

function _matchesSelector(el, selector) {
  var doc = document.documentElement;
  var fn = doc.matchesSelector || doc.webkitMatchesSelector;

  return fn.call( el, selector );
}