scroll_to_reveal.js

function scrollToReveal(selector) {
  MINIMUM = 50

  function scrollTowards(edge) {
    var distance = distanceTo(edge, selector)
    if (distance > MINIMUM) { return }

    var offset = distance - MINIMUM
    var direction = directionTowards(edge)
    var newPosition = $('body').scrollTop() - direction * offset

    $('html,body').scrollTop(newPosition)
  }
  
  function directionTowards(edge) {
    return edge == 'bottom' ? 1 : -1
  }

  scrollTowards('bottom')
  scrollTowards('top')        
}