diff --git a/lib/javascript-deprecated.js b/lib/javascript-deprecated.js
deleted file mode 100644
index 54d61bdfa45..00000000000
--- a/lib/javascript-deprecated.js
+++ /dev/null
@@ -1,5 +0,0 @@
-// Deprecated core Javascript functions for Moodle
-function submitFormById(id) {
-    submit_form_by_id(null, {id: id});
-}
-
diff --git a/lib/javascript-static.js b/lib/javascript-static.js
index a24683f40be..270aeed5ecc 100644
--- a/lib/javascript-static.js
+++ b/lib/javascript-static.js
@@ -1398,4 +1398,14 @@ function get_image_url(imagename, component) {
     }
 
     return url;
-}
\ No newline at end of file
+}
+
+
+
+// ===== Deprecated core Javascript functions for Moodle ====
+//       DO NOT USE!!!!!!!
+// Do not put this stuff in separate file because it only adds extra load on servers! 
+
+function submitFormById(id) {
+    submit_form_by_id(null, {id: id});
+}
diff --git a/lib/outputrenderers.php b/lib/outputrenderers.php
index 92c98da7afd..b9ce2f6715a 100644
--- a/lib/outputrenderers.php
+++ b/lib/outputrenderers.php
@@ -368,8 +368,7 @@ class core_renderer extends renderer_base {
             $output .= '<meta http-equiv="refresh" content="'.$this->page->periodicrefreshdelay.';url='.$this->page->url->out().'" />';
         }
 
-        $this->page->requires->js('lib/javascript-static.js')->in_head();
-        $this->page->requires->js('lib/javascript-deprecated.js')->in_head();
+        $this->page->requires->js('lib/javascript-static.js')->in_head(); // contains deprecated stuff too, do not add extre file for that for perf reasons!
         $this->page->requires->js_function_call('setTimeout', array('fix_column_widths()', 20));
 
         $focus = $this->page->focuscontrol;