Code simplification

program/js/list.js

@@ -1056,10 +1056,7 @@ select: function(id)
  */
 select_next: function()
 {
-  var next_row = this.get_next_row(),
+  var new_row = this.get_next_row() || this.get_prev_row();
-    prev_row = this.get_prev_row(),
-    new_row = (next_row) ? next_row : prev_row;
-
   if (new_row)
     this.select_row(new_row.uid, false, false);
 },