Because accessibility is for dweebs

pool.js

var wordPool

;(function() {
  EFFECT_DISTANCE = 100
  MAGNITUDE_COEFFICIENT = 2.5

  function distance(p1, p2) {
    var asq = Math.pow(p1.top - p2.top, 2)
      bsq = Math.pow(p1.left - p2.left, 2)

    return Math.sqrt(asq + bsq)
  }

  function pool(el) {
    el = $(el || 'body')

    var paras = el.find('.word-pool')

    for (var i=0; i<paras.length; i++) {
      var para = $(paras[i]),
        newPara = para.clone().empty(),
        words = para.text().split(/[ \n]+/)

      for (var k=0; k<words.length; k++) {
        $('<span class="pool-word">')
          .text(words[k] + ' ')
          .appendTo(newPara)
      }

      para.css('visibility', 'hidden')
      newPara.insertBefore(para)

      var domWords = newPara.find('.pool-word')
      for (var k=domWords.length-1; k>=0; k--) {
        var word = $(domWords[k]),
          basePosition = word.position(),
          css = $.extend(basePosition, {position: 'absolute'})

        word.css(css)
          .data('basePosition', basePosition)
      }
    }

    el.on('mousemove', function(e) {
      update(e.pageX, e.pageY)
    })

    ;(function rePlace() {
      place()
      requestAnimationFrame(rePlace)
    })()
  }

  var wordPoolWords;

  function update(mouseX, mouseY) {
    var wordPoolWords = wordPoolWords || $('.pool-word'),
      mousePos = {'top': mouseY, 'left': mouseX}

    for (var i=wordPoolWords.length-1; i>=0; i--) {
      var word = $(wordPoolWords[i]),
        basePos = word.data('basePosition'),
        dX = basePos.left - mouseX,
        dY = basePos.top - mouseY,
        dist = distance(mousePos, basePos)

      if (dist < EFFECT_DISTANCE) {
        var offsetMagnitude = Math.sqrt(EFFECT_DISTANCE - dist) 
            * MAGNITUDE_COEFFICIENT,
          offsetAngle = Math.atan2(dY, dX),
          targetX = basePos.left + Math.cos(offsetAngle) * offsetMagnitude,
          targetY = basePos.top + Math.sin(offsetAngle) * offsetMagnitude

        word.data('targetPos', {'top': targetY, 'left': targetX})
      } else {
        word.data('targetPos', basePos)
      }
    }
  }

  function place() {
    var wordPoolWords = wordPoolWords || $('.pool-word')

    for (var i=wordPoolWords.length-1; i>=0; i--) {
      var word = $(wordPoolWords[i]),
        curPos = word.position(),
        trgPos = word.data('targetPos') || curPos,
        newPos = {
          'top': curPos.top + (trgPos.top - curPos.top)/5,
          'left': curPos.left + (trgPos.left - curPos.left)/5
        }

      word.css(newPos)
    }
  }

  wordPool = {'pool': pool}
})()