Move cursor to the text area end after replying.

boards/static/js/thread.js

@@ -68,13 +68,27 b' function make_table_dom()'
     );
 }
 
+function moveCaretToEnd(el) {
+        if (typeof el.selectionStart == "number") {
+            el.selectionStart = el.selectionEnd = el.value.length;
+        } else if (typeof el.createTextRange != "undefined") {
+            el.focus();
+            var range = el.createTextRange();
+            range.collapse(false);
+            range.select();
+        }
+}
+
 function addQuickReply(postId) {
     var textToAdd = '>>' + postId + '\n\n';
     $('#id_text').val($('#id_text').val()+ textToAdd);
 
+    var textarea = document.getElementById('id_text');
+    moveCaretToEnd(textarea);
+
     $("html, body").animate({ scrollTop: $('#id_text').offset().top }, "slow");
 }
 
 $(document).ready(function(){
     add_panel('.navigation_panel');
-});
  No newline at end of file
+});