throttle-events.js

function actThenThrottleEvents(listener, delay) {
  var timeout;
  return function(e) {
    if (!timeout) { // no timer running
      listener(e); // run the function
      timeout = setTimeout( function() { timeout = null }, 
        delay); // start a timer that turns itself off when it's done
    }  
    //else, do nothing (we're in a throttling stage)
  }
}