) d.Sf.action = getURL('/settings/ui');
	}
	function UI()
	{
		gId('idonthateyou').style.display = (gId('dm').checked) ? 'inline':'none';
		var f = gId('theme_base');
		if (f) f.value = (gId('dm').checked) ? 'light':'dark';
	}

	// random BG image
	function randomBg() {
		let url = oldUrl;
		let t = "theme_bg_rnd";
		if (gId(t).checked) {
			url = "https://picsum.photos/1920/1080";
			if (gId(`${t}Grayscale`).checked) url += "?grayscale";
			if (gId(`${t}Blur`).checked) url += (url.includes("?") ? "&" : "?"