Make "Read more" button work as intended

Author: Anthony Parsons

html/index.html

@@ -25,7 +25,10 @@
 
       var r = document.getElementById('read-more');
           r.hidden = false;
-          r.addEventListener('click', function() { i.hidden = !i.hidden });
+          r.addEventListener('click', function(ev) {
+            i.hidden = !i.hidden;
+            ev.preventDefault();
+          });
     });
   }
   catch (e) {