From 01e6f3b7ee437eb366189dbf8cc77f4381aca96c Mon Sep 17 00:00:00 2001
From: Thanos K <pirouni@gmail.com>
Date: Sun, 13 Sep 2015 16:41:37 +0300
Subject: [PATCH] Added key navigation functionality

---
 item.php     |  4 ++--
 js/global.js | 19 ++++++++++++++++++-
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/item.php b/item.php
index ad5ad10..d12d1ac 100644
--- a/item.php
+++ b/item.php
@@ -58,10 +58,10 @@ if (isset($keys[array_search($item_num, $keys)-1])) {
 <ul id="nextprev">
 <?php
 if ($next_num) {
-	echo "<li><span>&#8594;</span><a href='/$next_num' title='Read next guideline'>$next_item</a></li>";
+	echo "<li><span>&#8594;</span><a href='/$next_num' title='Read next guideline' id='next_guideline'>$next_item</a></li>";
 }
 if ($prev_num) {
-	echo "<li><span>&#8592;</span><a href='/$prev_num' title='Read previous guideline'>$prev_item</a></li>";
+	echo "<li><span>&#8592;</span><a href='/$prev_num' title='Read previous guideline' id='previous_guideline'>$prev_item</a></li>";
 }
 ?>
 </ul>
diff --git a/js/global.js b/js/global.js
index 088136d..5129623 100644
--- a/js/global.js
+++ b/js/global.js
@@ -1 +1,18 @@
-/* No JS required any more */
\ No newline at end of file
+/* No JS required any more */
+
+document.onkeydown = function (e) {
+  switch (e.keyCode) {
+    case 37:
+        if (document.getElementById('previous_guideline') !== null)
+                window.location = document.getElementById('previous_guideline').href;
+        break;
+
+    case 39:
+        if (document.getElementById('next_guideline') !== null)
+                window.location = document.getElementById('next_guideline').href;
+        break;
+
+    default:
+        return; // Do nothing for the rest
+  }
+};