http://raizin-japan.com/cool/ の canvasで動いてる部分のみ下に移動するやつ ChromeのConsoleで実行

a.coffee

smokes = ['.vSmokeL', '.hSmokeL', '.cSmokeL', '.vSmokeR', '.hSmokeR', '.cSmokeR']
hidden = ['.main-copy', '.product-info']

for h in hidden
  $(h).each ->
    $(this).css('visibility', 'hidden')
    return

for s in smokes
  $(s).each ->
    top = $(this).css('top').replace('px', '')
    $(this).css('top', (parseInt(top, 10)+600)+'px')
    return

a.js

var h, hidden, s, smokes, _i, _j, _len, _len1;

smokes = ['.vSmokeL', '.hSmokeL', '.cSmokeL', '.vSmokeR', '.hSmokeR', '.cSmokeR'];

hidden = ['.main-copy', '.product-info'];

for (_i = 0, _len = hidden.length; _i < _len; _i++) {
  h = hidden[_i];
  $(h).each(function() {
    $(this).css('visibility', 'hidden');
  });
}

for (_j = 0, _len1 = smokes.length; _j < _len1; _j++) {
  s = smokes[_j];
  $(s).each(function() {
    var top;
    top = $(this).css('top').replace('px', '');
    $(this).css('top', (parseInt(top, 10) + 600) + 'px');
  });
}