Updated style; Added tracking acknowledgement banner.

1 files changed, 36 insertions, 0 deletions

diff --git a/common/common.js b/common/common.js
new file mode 100644
index 0000000..d79f659
--- /dev/null
+++ b/common/common.js
@@ -0,0 +1,36 @@
+/* Cookies */
+// Source: https://www.w3schools.com/js/js_cookies.asp
+function getCookie(cname) {
+    let name = cname + "=";
+    let decodedCookie = decodeURIComponent(document.cookie);
+    let ca = decodedCookie.split(';');
+
+    for(let i = 0; i <ca.length; i++) {
+        let c = ca[i];
+        while (c.charAt(0) == ' ') {
+            c = c.substring(1);
+        }
+        if (c.indexOf(name) == 0) {
+            return c.substring(name.length, c.length);
+        }
+    }
+
+    return "";
+}
+
+/* Analytics */
+if(getCookie("confirmed_analytics") !== "true") {
+    document.body.innerHTML +=
+        "<div id='analytics-banner'>\
+        <p><strong>NOTE: </strong>This website uses Google Analytics to collect visitor statistics.</p>\
+        <button id='analytics-confirm'><strong>I UNDERSTAND</strong></button>\
+        </div>";
+
+    const div_analyticsBanner = document.getElementById("analytics-banner");
+    const btn_analyticsConfirm = document.getElementById("analytics-confirm");
+
+    btn_analyticsConfirm.onclick = function() {
+        div_analyticsBanner.setAttribute("confirmed", "true");
+        document.cookie += "confirmed_analytics=true;";
+    };
+}
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