https://n0samu.github.io/ruffle-testing/run-ruffle.js

1function createParam(name, value) {
2	const param = document.createElement('param');
3	param.setAttribute('name', name);
4	param.setAttribute('value', value);
5	return param;
6}
7function fillGame() {
8	const game = document.createElement('object');
9	game.setAttribute('data', swfName);
10	game.setAttribute('type', 'application/x-shockwave-flash');
11	game.setAttribute('width', '100%');
12	game.setAttribute('height', '100%');
13	game.appendChild(createParam('wmode', 'direct'));
14	game.appendChild(createParam('allowscriptaccess', 'always'));
15	game.appendChild(createParam('allowfullscreen', 'true'));
16	game.appendChild(createParam('allowfullscreeninteractive', 'true'));
17	game.appendChild(createParam('allownetworking', 'all'));
18	document.body.appendChild(game);
19}
20if (document.readyState != 'loading') {
21	fillGame();
22} else {
23	document.addEventListener("DOMContentLoaded", fillGame)
24}