3 files changed, 46 insertions, 0 deletions
diff --git a/reference/js/iife.js b/reference/js/iife.js
new file mode 100644
index 0000000..43018d5
--- /dev/null
+++ b/reference/js/iife.js
@@ -0,0 +1,10 @@
+(function () {
+	/*
+		We set cookies by default, but we do NOT need consent for these as they 
+		are necessary and as per <https://gdpr.eu/cookies>: "To comply with the 
+		regulations governing cookies under the GDPR and the ePrivacy Directive 
+		you must: ... Receive users’ consent before you use any cookies 
+		__except__ strictly necessary cookies..."
+	*/
+	setTheme(localStorage.getItem("theme"));
+})();
diff --git a/reference/js/setTheme.js b/reference/js/setTheme.js
new file mode 100644
index 0000000..b90f629
--- /dev/null
+++ b/reference/js/setTheme.js
@@ -0,0 +1,29 @@
+function setTheme(theme) {
+	localStorage.setItem("theme",theme);
+	var   root      = document.querySelector(":root");
+	var   rootstyle = getComputedStyle(root);
+	const black     = rootstyle.getPropertyValue("--black");
+	const darkgrey  = rootstyle.getPropertyValue("--darkgrey");
+	const lightgrey = rootstyle.getPropertyValue("--lightgrey");
+	const white     = rootstyle.getPropertyValue("--white");
+	var   backgroundColour0;
+	var   backgroundColour1;
+	var   foregroundColour;
+	if (theme === "dark") {
+		backgroundColour0 = black;
+		backgroundColour1 = darkgrey;
+		foregroundColour  = white;
+	}
+	else if (theme === "light") {
+		backgroundColour0 = lightgrey;
+		backgroundColour1 = white;
+		foregroundColour  = black;
+	}
+	else {
+		setTheme("dark");
+		return;
+	}
+	root.style.setProperty("--backgroundColour0",backgroundColour0);
+	root.style.setProperty("--backgroundColour1",backgroundColour1);
+	root.style.setProperty("--foregroundColour",foregroundColour);
+}
diff --git a/reference/js/toggleTheme.js b/reference/js/toggleTheme.js
new file mode 100644
index 0000000..cfc1394
--- /dev/null
+++ b/reference/js/toggleTheme.js
@@ -0,0 +1,7 @@
+function toggleTheme() {
+	if (localStorage.getItem("theme") === "light") {
+		setTheme("dark");
+		return;
+	}
+	setTheme("light");
+}