// ==UserScript==
// @name        Pixiv Image Preload
// @namespace   https://greasyfork.org/en/users/37676
// @description Preload pixiv images
// @match       *://*.pixiv.net/member_illust.php?*mode=manga*
// @run-at      document-end
// @version     1.0.1
// @grant       none
// @license     Creative Commons Attribution 4.0 International Public License; http://creativecommons.org/licenses/by/4.0/
// @downloadURL none
// ==/UserScript==

if (pixiv.context.images.length)
loadImage(0, pixiv.context.images);

function loadImage(index, arrayImage)
{
	if (index < arrayImage.length)
	{
		var image = new Image();
		image.onload = function() {
			loadImage(index+1, arrayImage);
		};
		image.src = arrayImage[index];
	}
}