reinstate N & P shortcuts

help/3.php

@@ -18,6 +18,9 @@
 		<tr><td class='n'>u</td><td><?php echo __("Toggle unread") ?></td></tr>
 		<tr><td class='n'>T</td><td><?php echo __("Edit tags") ?></td></tr>
 		<tr><td class='n'>o</td><td><?php echo __("Open article in new window") ?></td></tr>
+		<tr><td class='n'>P</td><td><?php echo __("Mark articles above active as read") ?></td></tr>
+		<tr><td class='n'>N</td><td><?php echo __("Mark articles below active as read") ?></td></tr>
+
 	</table>
 
 	<h2><?php echo __("Other actions") ?></h2>

tt-rss.js

@@ -1010,6 +1010,16 @@ function hotkey_handler(e) {
 				return;
 			}
 
+			if (shift_key && (keycode == 78 || keycode == 40)) { // shift - n, down
+				catchupRelativeToArticle(1);
+				return false;
+			}
+
+			if (shift_key && (keycode == 80 || keycode == 38)) { // shift - p, up
+				catchupRelativeToArticle(0);
+				return false;
+			}
+
 			if (keycode == 78 || keycode == 40) { // n, down
 				if (typeof moveToPost != 'undefined') {
 					moveToPost('next');