gyazzzzzz_skid_slide_show.user.js

// ==UserScript==
// @name       gyazzzzzz_skid_slide_show.user.js
// @namespace  http://taizooo.tumblr.com/
// @include    http://gyazz.com/*/slide?jk
// ==/UserScript==
// http://gyazz.com/taizooo/goodevening/slide
// j : next photo, k : prev photo


with(unsafeWindow){
var display = function(next){
//  cur += next ? 1 : -1
  cur = (next == 'init')? 0 : (next ? cur + 1 : cur - 1)
  if(cur >= image.length)
    cur = 0;
  else if(cur < 0)
    cur = image.length -1;

  photo.src = image[cur];
  c.style.top = top[cur];
  c.style.left = left[cur];
  c.style.width = width[cur];
  c.style.fontSize = '20pt';
  c.style.color = color[cur];
  c.innerHTML = comment[cur];
}
display('init');
image.forEach(function(s){
  (new window.Image()).src = s;
})
}

var display = unsafeWindow.display;
var KEY_NEXT = charCode('J');
var KEY_PREVIOUS = charCode('K');

window.addEventListener('keydown', onKeyDown, false);

function onKeyDown(e){
  if(e.ctrlKey || e.altKey)
    return;
  
  switch(e.keyCode){
  case KEY_NEXT:
    display(true);
    return;
    
  case KEY_PREVIOUS:
    display(false);
    return;
  }
}

function charCode(c){
  return c.charCodeAt();
}