diff --git a/source/Ox.Geo/Ox.Geo.js b/source/Ox.Geo/Ox.Geo.js
index 763c0a3e..1f31941b 100644
--- a/source/Ox.Geo/Ox.Geo.js
+++ b/source/Ox.Geo/Ox.Geo.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.load.Geo = function(options, callback) {
 
     Ox.getJSON(Ox.PATH + 'Ox.Geo/json/Ox.Geo.json', function(data) {
diff --git a/source/Ox.Image/Ox.Image.js b/source/Ox.Image/Ox.Image.js
index ac7812ec..04e85683 100644
--- a/source/Ox.Image/Ox.Image.js
+++ b/source/Ox.Image/Ox.Image.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.load.Image = function(options, callback) {
 
     //@ Image ------------------------------------------------------------------
diff --git a/source/Ox.UI/Ox.UI.js b/source/Ox.UI/Ox.UI.js
index 34250a02..5520fffa 100644
--- a/source/Ox.UI/Ox.UI.js
+++ b/source/Ox.UI/Ox.UI.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.load.UI = function(options, callback) {
 
     options = Ox.extend({
@@ -250,7 +252,7 @@ Ox.load.UI = function(options, callback) {
                 callbacks.forEach(function(callback) {
                     callback();
                 });
-                delete callbacks;
+                //delete callbacks;
             });
             return function(callback) {
                 if (Ox.UI.$window) {
diff --git a/source/Ox.UI/js/Bar/Ox.Bar.js b/source/Ox.UI/js/Bar/Ox.Bar.js
index 772a9c91..795770da 100644
--- a/source/Ox.UI/js/Bar/Ox.Bar.js
+++ b/source/Ox.UI/js/Bar/Ox.Bar.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Bar <f:Ox.Element> Bar
     () ->              <o> Bar object
diff --git a/source/Ox.UI/js/Bar/Ox.Progressbar.js b/source/Ox.UI/js/Bar/Ox.Progressbar.js
index 8732492e..59b77545 100644
--- a/source/Ox.UI/js/Bar/Ox.Progressbar.js
+++ b/source/Ox.UI/js/Bar/Ox.Progressbar.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.Progressbar = function(options, self) {
 
     self = self || {};
diff --git a/source/Ox.UI/js/Bar/Ox.Resizebar.js b/source/Ox.UI/js/Bar/Ox.Resizebar.js
index cbb8a2e0..c23ced3b 100644
--- a/source/Ox.UI/js/Bar/Ox.Resizebar.js
+++ b/source/Ox.UI/js/Bar/Ox.Resizebar.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Resizebar <f:Ox.Element> Resizebar
     () ->              <f> Resizebar object
diff --git a/source/Ox.UI/js/Bar/Ox.Tabbar.js b/source/Ox.UI/js/Bar/Ox.Tabbar.js
index 87e372c7..a6f38b6d 100644
--- a/source/Ox.UI/js/Bar/Ox.Tabbar.js
+++ b/source/Ox.UI/js/Bar/Ox.Tabbar.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Tabbar <f:Ox.Bar> Tabbar
     () ->              <o> Tabbar object
diff --git a/source/Ox.UI/js/Bar/Ox.Toolbar.js b/source/Ox.UI/js/Bar/Ox.Toolbar.js
index 946357ef..9f930295 100644
--- a/source/Ox.UI/js/Bar/Ox.Toolbar.js
+++ b/source/Ox.UI/js/Bar/Ox.Toolbar.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /**
     fixme: no need for this
 */
diff --git a/source/Ox.UI/js/Calendar/Ox.Calendar.js b/source/Ox.UI/js/Calendar/Ox.Calendar.js
index d306399c..c844dfad 100644
--- a/source/Ox.UI/js/Calendar/Ox.Calendar.js
+++ b/source/Ox.UI/js/Calendar/Ox.Calendar.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Calendar <f:Ox.Element> Basic calendar object
     () ->              <f> Calendar object
diff --git a/source/Ox.UI/js/Calendar/Ox.CalendarDate.js b/source/Ox.UI/js/Calendar/Ox.CalendarDate.js
index fa4164a6..ba72edc2 100644
--- a/source/Ox.UI/js/Calendar/Ox.CalendarDate.js
+++ b/source/Ox.UI/js/Calendar/Ox.CalendarDate.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.CalendarDate <f> CalendarDate
     () ->              <o> CalendarData object
diff --git a/source/Ox.UI/js/Calendar/Ox.ListCalendar.js b/source/Ox.UI/js/Calendar/Ox.ListCalendar.js
index 9bdf448b..8e440895 100644
--- a/source/Ox.UI/js/Calendar/Ox.ListCalendar.js
+++ b/source/Ox.UI/js/Calendar/Ox.ListCalendar.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.ListCalendar <f> ListCalendar object
 @*/
diff --git a/source/Ox.UI/js/Core/Ox.App.js b/source/Ox.UI/js/Core/Ox.App.js
index bb070338..2d6a4ee8 100644
--- a/source/Ox.UI/js/Core/Ox.App.js
+++ b/source/Ox.UI/js/Core/Ox.App.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.App <f> Basic application instance that communicates with a JSON API
     () ->              <f> App object
diff --git a/source/Ox.UI/js/Core/Ox.Clipboard.js b/source/Ox.UI/js/Core/Ox.Clipboard.js
index dcc8bcd0..75949013 100644
--- a/source/Ox.UI/js/Core/Ox.Clipboard.js
+++ b/source/Ox.UI/js/Core/Ox.Clipboard.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Clipboard <o> Basic clipboard handler
     copy <f> Copy data to clipboard
diff --git a/source/Ox.UI/js/Core/Ox.Container.js b/source/Ox.UI/js/Core/Ox.Container.js
index 1b616955..1ac04f3d 100644
--- a/source/Ox.UI/js/Core/Ox.Container.js
+++ b/source/Ox.UI/js/Core/Ox.Container.js
@@ -1,9 +1,9 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 // fixme: wouldn't it be better to let the elements be,
 // rather then $element, $content, and potentially others,
 // 0, 1, 2, etc, so that append would append 0, and appendTo
 // would append (length - 1)?
-
 /*@
 Ox.Container <f> Container (depricated)
     () ->              <o> Container object
diff --git a/source/Ox.UI/js/Core/Ox.DocPage.js b/source/Ox.UI/js/Core/Ox.DocPage.js
index c7c74ab8..d94cd124 100644
--- a/source/Ox.UI/js/Core/Ox.DocPage.js
+++ b/source/Ox.UI/js/Core/Ox.DocPage.js
@@ -1,3 +1,4 @@
+'use strict';
 /*@
 Ox.DocPage <f> DocPage
     () ->              <o> DocPage object
diff --git a/source/Ox.UI/js/Core/Ox.DocPanel.js b/source/Ox.UI/js/Core/Ox.DocPanel.js
index 5320cc08..1101a07d 100644
--- a/source/Ox.UI/js/Core/Ox.DocPanel.js
+++ b/source/Ox.UI/js/Core/Ox.DocPanel.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.DocPanel <f> Documentation Panel
     () ->              <f> Documentation Panel
diff --git a/source/Ox.UI/js/Core/Ox.Element.js b/source/Ox.UI/js/Core/Ox.Element.js
index 53c5970d..cf160f56 100644
--- a/source/Ox.UI/js/Core/Ox.Element.js
+++ b/source/Ox.UI/js/Core/Ox.Element.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Element <function:Ox.JQueryElement> Basic UI element object
     # Usage --------------------------------------------------------------------
diff --git a/source/Ox.UI/js/Core/Ox.Event.js b/source/Ox.UI/js/Core/Ox.Event.js
index 8f8fc6b1..5a33bf34 100644
--- a/source/Ox.UI/js/Core/Ox.Event.js
+++ b/source/Ox.UI/js/Core/Ox.Event.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.Event <o> Basic event handler
 @*/
diff --git a/source/Ox.UI/js/Core/Ox.Focus.js b/source/Ox.UI/js/Core/Ox.Focus.js
index 2c89e73a..2c021a4c 100644
--- a/source/Ox.UI/js/Core/Ox.Focus.js
+++ b/source/Ox.UI/js/Core/Ox.Focus.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Focus <o> Basic focus handler
 @*/
diff --git a/source/Ox.UI/js/Core/Ox.History.js b/source/Ox.UI/js/Core/Ox.History.js
index 0ab160a7..2eb8c4c9 100644
--- a/source/Ox.UI/js/Core/Ox.History.js
+++ b/source/Ox.UI/js/Core/Ox.History.js
@@ -2,4 +2,5 @@
 /***
     Ox.History
 ***/
+'use strict';
 
diff --git a/source/Ox.UI/js/Core/Ox.JQueryElement.js b/source/Ox.UI/js/Core/Ox.JQueryElement.js
index 780cf7a1..b1dd2c38 100644
--- a/source/Ox.UI/js/Core/Ox.JQueryElement.js
+++ b/source/Ox.UI/js/Core/Ox.JQueryElement.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.JQueryElement <function> Wrapper for jQuery
     # Usage
diff --git a/source/Ox.UI/js/Core/Ox.Keyboard.js b/source/Ox.UI/js/Core/Ox.Keyboard.js
index eac2edef..951705e9 100644
--- a/source/Ox.UI/js/Core/Ox.Keyboard.js
+++ b/source/Ox.UI/js/Core/Ox.Keyboard.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Keyboard <o> Basic keyboard handler
 @*/
diff --git a/source/Ox.UI/js/Core/Ox.LoadingIcon.js b/source/Ox.UI/js/Core/Ox.LoadingIcon.js
index a0b3bacf..21c9cd79 100644
--- a/source/Ox.UI/js/Core/Ox.LoadingIcon.js
+++ b/source/Ox.UI/js/Core/Ox.LoadingIcon.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.LoadingIcon <f:Ox.Element> Loading Icon Element
     () ->              <f> Loading Icon Element
diff --git a/source/Ox.UI/js/Core/Ox.Progressbar.js b/source/Ox.UI/js/Core/Ox.Progressbar.js
index 6b93946d..d03a38e5 100644
--- a/source/Ox.UI/js/Core/Ox.Progressbar.js
+++ b/source/Ox.UI/js/Core/Ox.Progressbar.js
@@ -1,5 +1,6 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /**
 Ox.Progressbar
 */
-
+// FIXME: remove this!
\ No newline at end of file
diff --git a/source/Ox.UI/js/Core/Ox.Request.js b/source/Ox.UI/js/Core/Ox.Request.js
index 32c79f80..ebe666c3 100644
--- a/source/Ox.UI/js/Core/Ox.Request.js
+++ b/source/Ox.UI/js/Core/Ox.Request.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Request <o> Basic request handler object
 FIXME: options is not a property, just documenting defaults
diff --git a/source/Ox.UI/js/Core/Ox.SyntaxHighlighter.js b/source/Ox.UI/js/Core/Ox.SyntaxHighlighter.js
index b313515f..3abb83d9 100644
--- a/source/Ox.UI/js/Core/Ox.SyntaxHighlighter.js
+++ b/source/Ox.UI/js/Core/Ox.SyntaxHighlighter.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.SyntaxHighlighter <function> Syntax Highlighter
     (options[, self]) -> <o> Syntax Highlighter
diff --git a/source/Ox.UI/js/Core/Ox.Theme.js b/source/Ox.UI/js/Core/Ox.Theme.js
index 7b09b6c0..7efedfa5 100644
--- a/source/Ox.UI/js/Core/Ox.Theme.js
+++ b/source/Ox.UI/js/Core/Ox.Theme.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Theme <f> get/set theme
     ()      -> <s>  Get current theme
diff --git a/source/Ox.UI/js/Core/Ox.URL.js b/source/Ox.UI/js/Core/Ox.URL.js
index 6467e0ce..e10b0a49 100644
--- a/source/Ox.UI/js/Core/Ox.URL.js
+++ b/source/Ox.UI/js/Core/Ox.URL.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.URL <f> URL controller
     (options) -> <o> URL controller
diff --git a/source/Ox.UI/js/Form/Ox.ArrayInput.js b/source/Ox.UI/js/Form/Ox.ArrayInput.js
index 90467a02..33f5a101 100644
--- a/source/Ox.UI/js/Form/Ox.ArrayInput.js
+++ b/source/Ox.UI/js/Form/Ox.ArrayInput.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.ArrayInput <f> Array input
 @*/
diff --git a/source/Ox.UI/js/Form/Ox.Button.js b/source/Ox.UI/js/Form/Ox.Button.js
index d128f558..797f101f 100644
--- a/source/Ox.UI/js/Form/Ox.Button.js
+++ b/source/Ox.UI/js/Form/Ox.Button.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Button <f:Ox.Element> Button Object
     () ->              <f> Button Object
diff --git a/source/Ox.UI/js/Form/Ox.ButtonGroup.js b/source/Ox.UI/js/Form/Ox.ButtonGroup.js
index 0615277a..7ba2e6a0 100644
--- a/source/Ox.UI/js/Form/Ox.ButtonGroup.js
+++ b/source/Ox.UI/js/Form/Ox.ButtonGroup.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.ButtonGroup <f:Ox.Element> ButtonGroup Object
     () ->              <f> ButtonGroup Object
diff --git a/source/Ox.UI/js/Form/Ox.Checkbox.js b/source/Ox.UI/js/Form/Ox.Checkbox.js
index d723222a..ce8674ab 100644
--- a/source/Ox.UI/js/Form/Ox.Checkbox.js
+++ b/source/Ox.UI/js/Form/Ox.Checkbox.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Checkbox <f:Ox.Element> Checkbox Element
     () ->              <f> Checkbox Element
diff --git a/source/Ox.UI/js/Form/Ox.CheckboxGroup.js b/source/Ox.UI/js/Form/Ox.CheckboxGroup.js
index 29bed633..f6cd2bba 100644
--- a/source/Ox.UI/js/Form/Ox.CheckboxGroup.js
+++ b/source/Ox.UI/js/Form/Ox.CheckboxGroup.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.CheckboxGroup <f:Ox.Element> CheckboxGroup Object
     () ->              <f> CheckboxGroup Object
diff --git a/source/Ox.UI/js/Form/Ox.ColorInput.js b/source/Ox.UI/js/Form/Ox.ColorInput.js
index 65595688..7adf00e1 100644
--- a/source/Ox.UI/js/Form/Ox.ColorInput.js
+++ b/source/Ox.UI/js/Form/Ox.ColorInput.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.ColorInput <f:Ox.InputGroup> ColorInput Element
     () ->              <f> ColorInput Element
diff --git a/source/Ox.UI/js/Form/Ox.ColorPicker.js b/source/Ox.UI/js/Form/Ox.ColorPicker.js
index ca446631..3e473b12 100644
--- a/source/Ox.UI/js/Form/Ox.ColorPicker.js
+++ b/source/Ox.UI/js/Form/Ox.ColorPicker.js
@@ -1,5 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
-
+'use strict';
 /*@
 Ox.ColorPicker <f:Ox.Element> ColorPicker Element
     () ->              <f> ColorPicker Element
diff --git a/source/Ox.UI/js/Form/Ox.DateInput.js b/source/Ox.UI/js/Form/Ox.DateInput.js
index 821d5a61..969b93d9 100644
--- a/source/Ox.UI/js/Form/Ox.DateInput.js
+++ b/source/Ox.UI/js/Form/Ox.DateInput.js
@@ -1,5 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
-
+'use strict';
 /*@
 Ox.DateInput <f:Ox.Element> DateInput Element
     () ->              <f> DateInput Element
diff --git a/source/Ox.UI/js/Form/Ox.DateTimeInput.js b/source/Ox.UI/js/Form/Ox.DateTimeInput.js
index 2d71cb6d..08722a45 100644
--- a/source/Ox.UI/js/Form/Ox.DateTimeInput.js
+++ b/source/Ox.UI/js/Form/Ox.DateTimeInput.js
@@ -1,5 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
-
+'use strict';
 /*@
 Ox.DateTimeInput <f:Ox.Element> DateTimeInput Element
     () ->              <f> DateTimeInput Element
diff --git a/source/Ox.UI/js/Form/Ox.Editable.js b/source/Ox.UI/js/Form/Ox.Editable.js
index c638a0d8..58c4c7c5 100644
--- a/source/Ox.UI/js/Form/Ox.Editable.js
+++ b/source/Ox.UI/js/Form/Ox.Editable.js
@@ -1,3 +1,4 @@
+'use strict';
 /*@
 Ox.Editable <f> Editable element
     () ->              <f> Input Element
diff --git a/source/Ox.UI/js/Form/Ox.Filter.js b/source/Ox.UI/js/Form/Ox.Filter.js
index 25fcc2f8..90ed2fe5 100644
--- a/source/Ox.UI/js/Form/Ox.Filter.js
+++ b/source/Ox.UI/js/Form/Ox.Filter.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Filter <o> Filter Object
     () ->              <f> Filter Object
diff --git a/source/Ox.UI/js/Form/Ox.Form.js b/source/Ox.UI/js/Form/Ox.Form.js
index 6c45a855..33bdd424 100644
--- a/source/Ox.UI/js/Form/Ox.Form.js
+++ b/source/Ox.UI/js/Form/Ox.Form.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Form <f:Ox.Element> Form Object
     () ->              <f> Form Object
diff --git a/source/Ox.UI/js/Form/Ox.FormElementGroup.js b/source/Ox.UI/js/Form/Ox.FormElementGroup.js
index d41d08f3..0b2294ec 100644
--- a/source/Ox.UI/js/Form/Ox.FormElementGroup.js
+++ b/source/Ox.UI/js/Form/Ox.FormElementGroup.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.FormElementGroup <f:Ox.Element> FormElementGroup Element
     () ->              <f> FormElementGroup Element
diff --git a/source/Ox.UI/js/Form/Ox.FormItem.js b/source/Ox.UI/js/Form/Ox.FormItem.js
index cc482666..2ac129e8 100644
--- a/source/Ox.UI/js/Form/Ox.FormItem.js
+++ b/source/Ox.UI/js/Form/Ox.FormItem.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.FormItem <f:Ox.Element> FormItem Element, wrap form element with an error message
     () ->              <f> FormItem Element
diff --git a/source/Ox.UI/js/Form/Ox.Input.js b/source/Ox.UI/js/Form/Ox.Input.js
index 5bcb7622..213f6df2 100644
--- a/source/Ox.UI/js/Form/Ox.Input.js
+++ b/source/Ox.UI/js/Form/Ox.Input.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Input <f:Ox.Element> Input Element
     () ->              <f> Input Element
diff --git a/source/Ox.UI/js/Form/Ox.InputGroup.js b/source/Ox.UI/js/Form/Ox.InputGroup.js
index 585534a7..b78cff33 100644
--- a/source/Ox.UI/js/Form/Ox.InputGroup.js
+++ b/source/Ox.UI/js/Form/Ox.InputGroup.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.InputGroup <f:Ox.Element> InputGroup Object
     () ->              <f> InputGroup Object
diff --git a/source/Ox.UI/js/Form/Ox.Label.js b/source/Ox.UI/js/Form/Ox.Label.js
index 57705e77..91876d5d 100644
--- a/source/Ox.UI/js/Form/Ox.Label.js
+++ b/source/Ox.UI/js/Form/Ox.Label.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Label <f:Ox.Element> Label Object
     () ->              <f> Label Object
diff --git a/source/Ox.UI/js/Form/Ox.OptionGroup.js b/source/Ox.UI/js/Form/Ox.OptionGroup.js
index a81f5be5..23b2d0d0 100644
--- a/source/Ox.UI/js/Form/Ox.OptionGroup.js
+++ b/source/Ox.UI/js/Form/Ox.OptionGroup.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.OptionGroup <f> OptionGroup
     Helper object, used by ButtonGroup, CheckboxGroup, Select and Menu
diff --git a/source/Ox.UI/js/Form/Ox.Picker.js b/source/Ox.UI/js/Form/Ox.Picker.js
index 3c19fefa..7253534f 100644
--- a/source/Ox.UI/js/Form/Ox.Picker.js
+++ b/source/Ox.UI/js/Form/Ox.Picker.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Picker <f:Ox.Element> Picker Object
     () ->              <f> Picker Object
diff --git a/source/Ox.UI/js/Form/Ox.PlaceInput.js b/source/Ox.UI/js/Form/Ox.PlaceInput.js
index 72279e20..2d81d9d6 100644
--- a/source/Ox.UI/js/Form/Ox.PlaceInput.js
+++ b/source/Ox.UI/js/Form/Ox.PlaceInput.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.PlaceInput <f:Ox.FormElementGroup> PlaceInput Object
     () ->              <f> PlaceInput Object
diff --git a/source/Ox.UI/js/Form/Ox.PlacePicker.js b/source/Ox.UI/js/Form/Ox.PlacePicker.js
index 35c18e89..568da32f 100644
--- a/source/Ox.UI/js/Form/Ox.PlacePicker.js
+++ b/source/Ox.UI/js/Form/Ox.PlacePicker.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.PlacePicker <f:Ox.Element> PlacePicker Object
     () ->              <f> PlacePicker Object
diff --git a/source/Ox.UI/js/Form/Ox.Range.js b/source/Ox.UI/js/Form/Ox.Range.js
index 04461f5e..6c7695b5 100644
--- a/source/Ox.UI/js/Form/Ox.Range.js
+++ b/source/Ox.UI/js/Form/Ox.Range.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Range <f:Ox.Element> Range Object
     () ->              <f> Range Object
diff --git a/source/Ox.UI/js/Form/Ox.Select.js b/source/Ox.UI/js/Form/Ox.Select.js
index 36ea4de3..a48b3978 100644
--- a/source/Ox.UI/js/Form/Ox.Select.js
+++ b/source/Ox.UI/js/Form/Ox.Select.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Select <f:Ox.Element> Select Object
     () ->              <f> Select Object
diff --git a/source/Ox.UI/js/Form/Ox.TimeInput.js b/source/Ox.UI/js/Form/Ox.TimeInput.js
index e4127eaa..31563210 100644
--- a/source/Ox.UI/js/Form/Ox.TimeInput.js
+++ b/source/Ox.UI/js/Form/Ox.TimeInput.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.TimeInput <f:Ox.Element> TimeInput Object
     () ->              <f> TimeInput Object
diff --git a/source/Ox.UI/js/List/Ox.IconItem.js b/source/Ox.UI/js/List/Ox.IconItem.js
index 8f1fc919..8b1f590e 100644
--- a/source/Ox.UI/js/List/Ox.IconItem.js
+++ b/source/Ox.UI/js/List/Ox.IconItem.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=js
 
+'use strict';
+
 /*@
 Ox.IconItem <f:Ox.Element> IconItem Object
     () ->              <f> IconItem Object
diff --git a/source/Ox.UI/js/List/Ox.IconList.js b/source/Ox.UI/js/List/Ox.IconList.js
index 061a7039..6368d439 100644
--- a/source/Ox.UI/js/List/Ox.IconList.js
+++ b/source/Ox.UI/js/List/Ox.IconList.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=js
+'use strict';
 /*@
 Ox.IconList <f:Ox.Element> IconList Object
     () ->              <f> IconList Object
diff --git a/source/Ox.UI/js/List/Ox.InfoList.js b/source/Ox.UI/js/List/Ox.InfoList.js
index e98dffc6..7e3b3aa3 100644
--- a/source/Ox.UI/js/List/Ox.InfoList.js
+++ b/source/Ox.UI/js/List/Ox.InfoList.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.InfoList = function(options, self) {
 
     self = self || {};
diff --git a/source/Ox.UI/js/List/Ox.ItemInput.js b/source/Ox.UI/js/List/Ox.ItemInput.js
index eeb7fe2a..a7aacbe4 100644
--- a/source/Ox.UI/js/List/Ox.ItemInput.js
+++ b/source/Ox.UI/js/List/Ox.ItemInput.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.ItemInput <f:Ox.Element> ItemInput Object
     () ->              <f> ItemInput Object
diff --git a/source/Ox.UI/js/List/Ox.List.js b/source/Ox.UI/js/List/Ox.List.js
index 684d5236..493994ea 100644
--- a/source/Ox.UI/js/List/Ox.List.js
+++ b/source/Ox.UI/js/List/Ox.List.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.List <f:Ox.Element> List Element
     () ->              <f> List Object
diff --git a/source/Ox.UI/js/List/Ox.ListItem.js b/source/Ox.UI/js/List/Ox.ListItem.js
index 47bb0c46..f2e07634 100644
--- a/source/Ox.UI/js/List/Ox.ListItem.js
+++ b/source/Ox.UI/js/List/Ox.ListItem.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.ListItem <f:Ox.Element> ListItem Object
     () ->              <f> ListItem Object
diff --git a/source/Ox.UI/js/List/Ox.ListPage.js b/source/Ox.UI/js/List/Ox.ListPage.js
index 274164e3..deaf7a7c 100644
--- a/source/Ox.UI/js/List/Ox.ListPage.js
+++ b/source/Ox.UI/js/List/Ox.ListPage.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.ListPage <f:Ox.Element> ListPage Object
     () ->              <f> ListPage Object
diff --git a/source/Ox.UI/js/List/Ox.TextList.js b/source/Ox.UI/js/List/Ox.TextList.js
index d028cddf..79a43420 100644
--- a/source/Ox.UI/js/List/Ox.TextList.js
+++ b/source/Ox.UI/js/List/Ox.TextList.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.TextList <f:Ox.Element> TextList Object
     () ->              <f> TextList Object
diff --git a/source/Ox.UI/js/List/Ox.TreeList.js b/source/Ox.UI/js/List/Ox.TreeList.js
index 9efd552c..3e539e72 100644
--- a/source/Ox.UI/js/List/Ox.TreeList.js
+++ b/source/Ox.UI/js/List/Ox.TreeList.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.TreeList <f:Ox.Element> TreeList Object
     () ->              <f> TreeList Object
diff --git a/source/Ox.UI/js/Map/Ox.ListMap.js b/source/Ox.UI/js/Map/Ox.ListMap.js
index c0a42391..cfb233ef 100644
--- a/source/Ox.UI/js/Map/Ox.ListMap.js
+++ b/source/Ox.UI/js/Map/Ox.ListMap.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.ListMap <f:Ox.Element> ListMap object
     () ->              <f> ListMap object
diff --git a/source/Ox.UI/js/Map/Ox.Map.js b/source/Ox.UI/js/Map/Ox.Map.js
index 94f8ab5d..d38a101d 100644
--- a/source/Ox.UI/js/Map/Ox.Map.js
+++ b/source/Ox.UI/js/Map/Ox.Map.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Map <function> Basic map object
     # DESCRIPTION --------------------------------------------------------------
diff --git a/source/Ox.UI/js/Map/Ox.MapImage.js b/source/Ox.UI/js/Map/Ox.MapImage.js
index f8c9de6f..7f74e24c 100644
--- a/source/Ox.UI/js/Map/Ox.MapImage.js
+++ b/source/Ox.UI/js/Map/Ox.MapImage.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.MapImage <f:Ox.Element> MapImage Object
     () ->              <f> MapImage Object
diff --git a/source/Ox.UI/js/Map/Ox.MapMarker.js b/source/Ox.UI/js/Map/Ox.MapMarker.js
index dcfdbc3c..fb5c5019 100644
--- a/source/Ox.UI/js/Map/Ox.MapMarker.js
+++ b/source/Ox.UI/js/Map/Ox.MapMarker.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.MapMarker <f> MapMarker Object
     (options) ->       <f> MapMarker Object
diff --git a/source/Ox.UI/js/Map/Ox.MapMarkerImage.js b/source/Ox.UI/js/Map/Ox.MapMarkerImage.js
index 4dfb29c4..f3e30d59 100644
--- a/source/Ox.UI/js/Map/Ox.MapMarkerImage.js
+++ b/source/Ox.UI/js/Map/Ox.MapMarkerImage.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.MapMarkerImage <f:google.maps.MarkerImage> MapMarkerImage Object
     (options) ->       <f> google.maps.MarkerImage
diff --git a/source/Ox.UI/js/Map/Ox.MapPlace.js b/source/Ox.UI/js/Map/Ox.MapPlace.js
index d9d11d9d..8b384616 100644
--- a/source/Ox.UI/js/Map/Ox.MapPlace.js
+++ b/source/Ox.UI/js/Map/Ox.MapPlace.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.MapPlace <f> MapPlace Object
     (options) ->       <f> MapPlace Object
diff --git a/source/Ox.UI/js/Map/Ox.MapRectangle.js b/source/Ox.UI/js/Map/Ox.MapRectangle.js
index d7a36899..2634e0cf 100644
--- a/source/Ox.UI/js/Map/Ox.MapRectangle.js
+++ b/source/Ox.UI/js/Map/Ox.MapRectangle.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.MapRectangle <f> MapRectangle Object
     () ->              <f> MapRectangle Object
diff --git a/source/Ox.UI/js/Map/Ox.MapRectangleMarker.js b/source/Ox.UI/js/Map/Ox.MapRectangleMarker.js
index db53ad70..0cec3c6e 100644
--- a/source/Ox.UI/js/Map/Ox.MapRectangleMarker.js
+++ b/source/Ox.UI/js/Map/Ox.MapRectangleMarker.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.MapRectangleMarker <f> MapRectangleMarker Object
     () ->              <f> MapRectangleMarker Object
diff --git a/source/Ox.UI/js/Menu/Ox.MainMenu.js b/source/Ox.UI/js/Menu/Ox.MainMenu.js
index 1d1d79b7..04fb3b24 100644
--- a/source/Ox.UI/js/Menu/Ox.MainMenu.js
+++ b/source/Ox.UI/js/Menu/Ox.MainMenu.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.MainMenu <f:Ox.Bar> MainMenu Object
     () ->              <f> MainMenu Object
diff --git a/source/Ox.UI/js/Menu/Ox.Menu.js b/source/Ox.UI/js/Menu/Ox.Menu.js
index 4f51772a..38523f27 100644
--- a/source/Ox.UI/js/Menu/Ox.Menu.js
+++ b/source/Ox.UI/js/Menu/Ox.Menu.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Menu <f:Ox.Element> Menu Object
     () ->              <f> Menu Object
diff --git a/source/Ox.UI/js/Menu/Ox.MenuItem.js b/source/Ox.UI/js/Menu/Ox.MenuItem.js
index 08b3e58b..f1e93e79 100644
--- a/source/Ox.UI/js/Menu/Ox.MenuItem.js
+++ b/source/Ox.UI/js/Menu/Ox.MenuItem.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.MenuItem <f:Ox.Element> MenuItem Object
     () ->              <f> MenuItem Object
diff --git a/source/Ox.UI/js/Panel/Ox.CollapsePanel.js b/source/Ox.UI/js/Panel/Ox.CollapsePanel.js
index ef8b2915..01aed3d0 100644
--- a/source/Ox.UI/js/Panel/Ox.CollapsePanel.js
+++ b/source/Ox.UI/js/Panel/Ox.CollapsePanel.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.CollapsePanel <f:Ox.Panel> CollapsePanel Object
     () ->              <f> CollapsePanel Object
diff --git a/source/Ox.UI/js/Panel/Ox.Panel.js b/source/Ox.UI/js/Panel/Ox.Panel.js
index ce258cac..fd2511bd 100644
--- a/source/Ox.UI/js/Panel/Ox.Panel.js
+++ b/source/Ox.UI/js/Panel/Ox.Panel.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Panel <f:Ox.Element> Panel Object
     () ->              <f> Panel Object
diff --git a/source/Ox.UI/js/Panel/Ox.SplitPanel.js b/source/Ox.UI/js/Panel/Ox.SplitPanel.js
index 4a8bb2d7..9f0598f6 100644
--- a/source/Ox.UI/js/Panel/Ox.SplitPanel.js
+++ b/source/Ox.UI/js/Panel/Ox.SplitPanel.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.SplitPanel <f:Ox.Element> SpliPanel Object
     () ->              <f> SpliPanel Object
diff --git a/source/Ox.UI/js/Panel/Ox.TabPanel.js b/source/Ox.UI/js/Panel/Ox.TabPanel.js
index 884f888a..6ce45070 100644
--- a/source/Ox.UI/js/Panel/Ox.TabPanel.js
+++ b/source/Ox.UI/js/Panel/Ox.TabPanel.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 Ox.TabPanel = function(options, self) {
 
     self = self || {};
diff --git a/source/Ox.UI/js/Video/Ox.AnnotationPanel.js b/source/Ox.UI/js/Video/Ox.AnnotationPanel.js
index f5cc50e9..e1e9dd08 100644
--- a/source/Ox.UI/js/Video/Ox.AnnotationPanel.js
+++ b/source/Ox.UI/js/Video/Ox.AnnotationPanel.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.AnnotationPanel <f:Ox.Element> AnnotationPanel Object
     () ->              <f> AnnotationPanel Object
diff --git a/source/Ox.UI/js/Video/Ox.BlockTimeline.js b/source/Ox.UI/js/Video/Ox.BlockTimeline.js
index 9f9a0576..91781b4a 100644
--- a/source/Ox.UI/js/Video/Ox.BlockTimeline.js
+++ b/source/Ox.UI/js/Video/Ox.BlockTimeline.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.BlockTimeline <f:Ox.Element> BlockTimeline Object
     () ->              <f> BlockTimeline Object
diff --git a/source/Ox.UI/js/Video/Ox.BlockVideoTimeline.js b/source/Ox.UI/js/Video/Ox.BlockVideoTimeline.js
index 2e3fc858..4607738b 100644
--- a/source/Ox.UI/js/Video/Ox.BlockVideoTimeline.js
+++ b/source/Ox.UI/js/Video/Ox.BlockVideoTimeline.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 Ox.BlockVideoTimeline = function(options, self) {
 
     self = self || {};
diff --git a/source/Ox.UI/js/Video/Ox.LargeTimeline.js b/source/Ox.UI/js/Video/Ox.LargeTimeline.js
index 9ef9639d..48fb58b2 100644
--- a/source/Ox.UI/js/Video/Ox.LargeTimeline.js
+++ b/source/Ox.UI/js/Video/Ox.LargeTimeline.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.LargeTimeline <f:Ox.Element> LargeTimeline Object
     () ->              <f> LargeTimeline Object
diff --git a/source/Ox.UI/js/Video/Ox.LargeVideoTimeline.js b/source/Ox.UI/js/Video/Ox.LargeVideoTimeline.js
index a011ee26..c0849f58 100644
--- a/source/Ox.UI/js/Video/Ox.LargeVideoTimeline.js
+++ b/source/Ox.UI/js/Video/Ox.LargeVideoTimeline.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.LargeVideoTimeline <f:Ox.Element> LargeTimeline Object
     () ->              <f> LargeTimeline Object
diff --git a/source/Ox.UI/js/Video/Ox.SmallTimeline.js b/source/Ox.UI/js/Video/Ox.SmallTimeline.js
index 40764a0a..5918d72a 100644
--- a/source/Ox.UI/js/Video/Ox.SmallTimeline.js
+++ b/source/Ox.UI/js/Video/Ox.SmallTimeline.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.SmallTimeline <f:Ox.Element> SmallTimeline Object
     () ->              <f> SmallTimeline Object
diff --git a/source/Ox.UI/js/Video/Ox.SmallVideoTimeline.js b/source/Ox.UI/js/Video/Ox.SmallVideoTimeline.js
index cc46b665..3467881b 100644
--- a/source/Ox.UI/js/Video/Ox.SmallVideoTimeline.js
+++ b/source/Ox.UI/js/Video/Ox.SmallVideoTimeline.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.SmallVideoTimeline = function(options, self) {
 
     self = self || {};
diff --git a/source/Ox.UI/js/Video/Ox.SmallVideoTimelineImage.js b/source/Ox.UI/js/Video/Ox.SmallVideoTimelineImage.js
index d67ccdce..1ab470bc 100644
--- a/source/Ox.UI/js/Video/Ox.SmallVideoTimelineImage.js
+++ b/source/Ox.UI/js/Video/Ox.SmallVideoTimelineImage.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.SmallVideoTimelineImage = function(options, self) {
 
     self = self || {};
diff --git a/source/Ox.UI/js/Video/Ox.VideoEditor.js b/source/Ox.UI/js/Video/Ox.VideoEditor.js
index 3ecfa43b..cab0f7af 100644
--- a/source/Ox.UI/js/Video/Ox.VideoEditor.js
+++ b/source/Ox.UI/js/Video/Ox.VideoEditor.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.VideoEditor <f:Ox.Element> VideoEditor Object
     () ->              <f> VideoEditor Object
diff --git a/source/Ox.UI/js/Video/Ox.VideoEditorPlayer.js b/source/Ox.UI/js/Video/Ox.VideoEditorPlayer.js
index 1a8c5ad7..0d0120a4 100644
--- a/source/Ox.UI/js/Video/Ox.VideoEditorPlayer.js
+++ b/source/Ox.UI/js/Video/Ox.VideoEditorPlayer.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.VideoEditorPlayer <f:Ox.Element> VideoEditorPlayer Object
     () ->              <f> VideoEditorPlayer Object
diff --git a/source/Ox.UI/js/Video/Ox.VideoElement.js b/source/Ox.UI/js/Video/Ox.VideoElement.js
index 7a20c5be..d50e1331 100644
--- a/source/Ox.UI/js/Video/Ox.VideoElement.js
+++ b/source/Ox.UI/js/Video/Ox.VideoElement.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.VideoElement <f:Ox.Element> VideoElement Object
     () ->              <f> VideoElement Object
diff --git a/source/Ox.UI/js/Video/Ox.VideoPanelPlayer.js b/source/Ox.UI/js/Video/Ox.VideoPanelPlayer.js
index afb4be01..8ca0e306 100644
--- a/source/Ox.UI/js/Video/Ox.VideoPanelPlayer.js
+++ b/source/Ox.UI/js/Video/Ox.VideoPanelPlayer.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.VideoPanelPlayer <f:Ox.Element> VideoPanelPlayer Object
     () ->              <f> VideoPanelPlayer Object
diff --git a/source/Ox.UI/js/Video/Ox.VideoPlayer.js b/source/Ox.UI/js/Video/Ox.VideoPlayer.js
index 3cfcbc6e..c2bc381c 100644
--- a/source/Ox.UI/js/Video/Ox.VideoPlayer.js
+++ b/source/Ox.UI/js/Video/Ox.VideoPlayer.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.VideoPlayer <f> Generic Video Player
     (options, self) -> <o> Video Player
diff --git a/source/Ox.UI/js/Video/Ox.VideoPreview.js b/source/Ox.UI/js/Video/Ox.VideoPreview.js
index 849fe893..24edd38a 100644
--- a/source/Ox.UI/js/Video/Ox.VideoPreview.js
+++ b/source/Ox.UI/js/Video/Ox.VideoPreview.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 Ox.VideoPreview = function(options, self) {
 
     self = self || {};
diff --git a/source/Ox.UI/js/Window/Ox.Dialog.js b/source/Ox.UI/js/Window/Ox.Dialog.js
index 359766d0..56617790 100644
--- a/source/Ox.UI/js/Window/Ox.Dialog.js
+++ b/source/Ox.UI/js/Window/Ox.Dialog.js
@@ -1,4 +1,5 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
+'use strict';
 /*@
 Ox.Dialog <f:Ox.Element> Dialog object
     () ->              <f> Dialog object
diff --git a/source/Ox.UI/js/Window/Ox.Layer.js b/source/Ox.UI/js/Window/Ox.Layer.js
index 66a46b60..257408bd 100644
--- a/source/Ox.UI/js/Window/Ox.Layer.js
+++ b/source/Ox.UI/js/Window/Ox.Layer.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Layer <o> Background layer for dialogs and menus
     (options, self) -> <o> Layer
diff --git a/source/Ox.UI/js/Window/Ox.Tooltip.js b/source/Ox.UI/js/Window/Ox.Tooltip.js
index 46176516..944feaf6 100644
--- a/source/Ox.UI/js/Window/Ox.Tooltip.js
+++ b/source/Ox.UI/js/Window/Ox.Tooltip.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.Tooltip <f:Ox.Element> Tooltip Object
     () ->              <f> Tooltip Object
diff --git a/source/Ox.Unicode/Ox.Unicode.js b/source/Ox.Unicode/Ox.Unicode.js
index f788cb7c..3370b9ba 100644
--- a/source/Ox.Unicode/Ox.Unicode.js
+++ b/source/Ox.Unicode/Ox.Unicode.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.load.Unicode = function(options, callback) {
 
     Ox.getJSON(Ox.PATH + 'Ox.Unicode/json/Ox.Unicode.json', function(chars) {
diff --git a/source/Ox.js b/source/Ox.js
index f0995b1b..e7f8ac65 100644
--- a/source/Ox.js
+++ b/source/Ox.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // Ox.js Developer Version
 
 /*
@@ -8,7 +10,7 @@ Usage:
     Ox.load({module: options, module: options}, callback)
 */
 
-Ox = {
+window.Ox = {
 
     load: function() {
 
diff --git a/source/Ox/js/Array.js b/source/Ox/js/Array.js
index 26153e58..054b6ffd 100644
--- a/source/Ox/js/Array.js
+++ b/source/Ox/js/Array.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.compact <f> Returns an array w/o <code>null</code> or <code>undefined</code>
     > Ox.compact([null,,1,,2,,3])
diff --git a/source/Ox/js/Collection.js b/source/Ox/js/Collection.js
index b5b1b1f1..4f9c9d70 100644
--- a/source/Ox/js/Collection.js
+++ b/source/Ox/js/Collection.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.avg <f> Returns the average of an array's values, or an object's properties
     (collection) -> <n> Average value
diff --git a/source/Ox/js/Color.js b/source/Ox/js/Color.js
index 0e99abff..16588b50 100644
--- a/source/Ox/js/Color.js
+++ b/source/Ox/js/Color.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.hsl <f> Takes RGB values and returns HSL values
     (rgb) <[n]> HSL values
diff --git a/source/Ox/js/Constants.js b/source/Ox/js/Constants.js
index 9353ae2f..ccdc2af3 100644
--- a/source/Ox/js/Constants.js
+++ b/source/Ox/js/Constants.js
@@ -1,3 +1,5 @@
+'use strict';
+
 //@ Ox.AMPM <[str]> ['AM', 'PM']
 Ox.AMPM = ['AM', 'PM'];
 //@ Ox.BASE_32_ALIASES <o> Base 32 aliases
diff --git a/source/Ox/js/Core.js b/source/Ox/js/Core.js
index 9417bc32..cfca5c1a 100644
--- a/source/Ox/js/Core.js
+++ b/source/Ox/js/Core.js
@@ -2,6 +2,8 @@
 
 // OxJS (c) 2011 0x2620, dual-licensed GPL/MIT, see http://oxjs.org for details
 
+'use strict';
+
 /*
 Some conventions:
     Functions
@@ -113,6 +115,7 @@ Ox.load = function() {
     length = Ox.len(modules);
     Ox.forEach(modules, function(options, module) {
         Ox.loadFile(Ox.PATH + 'Ox.' + module + '/Ox.' + module + '.js', function() {
+            Ox.print('?', module)
             Ox.load[module](options, function(s) {
                 success += s;
                 ++counter == length && callback(success == counter);
@@ -172,9 +175,9 @@ Ox.Log = (function() {
         if (!log.filterEnabled || log.filter.indexOf(args[0]) > -1) {
             date = new Date();
             args.unshift(
-                Ox.formatDate(date, '%H:%M:%S.') + (+date).toString().substr(-3),
+                Ox.formatDate(date, '%H:%M:%S.') + (+date).toString().substr(-3)/*,
                 (arguments.callee.caller && arguments.callee.caller.name)
-                || '(anonymous)'
+                || '(anonymous)'*/
             );
             window.console && window.console.log.apply(window.console, args);
             ret = args.join(' ');
@@ -198,9 +201,9 @@ Ox.print = function() {
     var args = Ox.makeArray(arguments),
         date = new Date();
     args.unshift(
-        Ox.formatDate(date, '%H:%M:%S.') + (+date).toString().substr(-3),
+        Ox.formatDate(date, '%H:%M:%S.') + (+date).toString().substr(-3)/*,
         (arguments.callee.caller && arguments.callee.caller.name)
-        || '(anonymous)'
+        || '(anonymous)'*/
     );
     window.console && window.console.log.apply(window.console, args);
     return args.join(' ');
@@ -248,7 +251,11 @@ Ox.wrap = function(val, chained) {
         }
     };
     Object.getOwnPropertyNames(Ox).forEach(function(name) {
-        if (name[0] == name[0].toLowerCase() && Ox.isFunction(Ox[name])) {
+        if (
+            ['arguments', 'callee', 'caller', 'length'].indexOf(name) == -1
+            && name[0] == name[0].toLowerCase()
+            && Ox.isFunction(Ox[name])
+        ) {
             wrapper[name] = function() {
                 var args = Array.prototype.slice.call(arguments), ret;
                 args.unshift(val);
diff --git a/source/Ox/js/DOM.js b/source/Ox/js/DOM.js
index 38a2931c..bac0b2a3 100644
--- a/source/Ox/js/DOM.js
+++ b/source/Ox/js/DOM.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.canvas <function> Generic canvas object
     Returns an object with the properties: <code>canvas</code>,
@@ -39,7 +41,7 @@ Ox.documentReady = (function() {
             callbacks.forEach(function(callback) {
                 callback();
             });
-            delete callbacks;
+            //delete callbacks;
         }
     };
     return function(callback) {
diff --git a/source/Ox/js/Date.js b/source/Ox/js/Date.js
index c9748a69..171bbe30 100644
--- a/source/Ox/js/Date.js
+++ b/source/Ox/js/Date.js
@@ -1,3 +1,5 @@
+'use strict';
+
 //@ Ox.getDate <f> Get the day of a date, optionally UTC
 // see Ox.setSeconds for source code
 
diff --git a/source/Ox/js/Encoding.js b/source/Ox/js/Encoding.js
index 711151ef..81a7e256 100644
--- a/source/Ox/js/Encoding.js
+++ b/source/Ox/js/Encoding.js
@@ -1,3 +1,5 @@
+'use strict';
+
 (function() {
 
     function cap(width, height) {
diff --git a/source/Ox/js/Fallback.js b/source/Ox/js/Fallback.js
index eeef503c..e21cb7b1 100644
--- a/source/Ox/js/Fallback.js
+++ b/source/Ox/js/Fallback.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/filter
 if (!Array.prototype.filter) {
     Array.prototype.filter = function(fn, that) {  
diff --git a/source/Ox/js/Format.js b/source/Ox/js/Format.js
index a489e3c1..d0ff62d5 100644
--- a/source/Ox/js/Format.js
+++ b/source/Ox/js/Format.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.formatArea <f> Formats a number of meters as square meters or kilometers
     > Ox.formatArea(1000)
@@ -268,7 +270,6 @@ Ox.formatDateRange = function(start, end, utc) {
     if (isOneUnit) {
         strings = [Ox.formatDate(dates[0], formats[precision[0] - 1], utc)];
     } else {
-        format = formats[precision[0] - 1];
         strings = [
             Ox.formatDate(dates[0], formats[precision[0] - 1], utc),
             Ox.formatDate(dates[1], formats[precision[1] - 1], utc)
diff --git a/source/Ox/js/Geo.js b/source/Ox/js/Geo.js
index 6e04d2b0..5e931b62 100644
--- a/source/Ox/js/Geo.js
+++ b/source/Ox/js/Geo.js
@@ -1,3 +1,5 @@
+'use strict';
+
 (function() {
 
     // fixme: make all this work with different types of "points"
diff --git a/source/Ox/js/HTML.js b/source/Ox/js/HTML.js
index 5ec5de0c..6ef08898 100644
--- a/source/Ox/js/HTML.js
+++ b/source/Ox/js/HTML.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.parseEmailAddresses <f> Takes HTML and turns e-mail addresses into links
 @*/
diff --git a/source/Ox/js/JavaScript.js b/source/Ox/js/JavaScript.js
index e7e6ada8..fd392c67 100644
--- a/source/Ox/js/JavaScript.js
+++ b/source/Ox/js/JavaScript.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.doc <f> Generates documentation for annotated JavaScript
     (file, callback) -> <u> undefined
diff --git a/source/Ox/js/Math.js b/source/Ox/js/Math.js
index 77571e30..186bd287 100644
--- a/source/Ox/js/Math.js
+++ b/source/Ox/js/Math.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.asinh <f> Inverse hyperbolic sine
     Strangely missing from <code>Math</code>.
diff --git a/source/Ox/js/Object.js b/source/Ox/js/Object.js
index bf32b7f9..155c1d5a 100644
--- a/source/Ox/js/Object.js
+++ b/source/Ox/js/Object.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.extend <function> Extends an object with one or more other objects
     > Ox.extend({a: 1, b: 1, c: 1}, {b: 2, c: 2}, {c: 3})
diff --git a/source/Ox/js/Request.js b/source/Ox/js/Request.js
index 0e4c6697..6d50793f 100644
--- a/source/Ox/js/Request.js
+++ b/source/Ox/js/Request.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.get <f> Get a remote file
     # fixme: remote? same-origin-policy? jsonp?
@@ -54,7 +56,7 @@ Ox.loadFile = (function() {
     return function (file, callback) {
         var element,
             request,
-            type = file.split('.').pop();
+            type = file.split('.').pop(),
             isImage = type != 'css' && type != 'js';
         if (!cache[file]) {
             if (isImage) {
diff --git a/source/Ox/js/String.js b/source/Ox/js/String.js
index 0efc270f..77c52127 100644
--- a/source/Ox/js/String.js
+++ b/source/Ox/js/String.js
@@ -1,3 +1,5 @@
+'use strict';
+
 Ox.basename = function(str) {
     /*
     fixme: deprecate
diff --git a/source/Ox/js/Type.js b/source/Ox/js/Type.js
index ae0d6e6b..28cdd39d 100644
--- a/source/Ox/js/Type.js
+++ b/source/Ox/js/Type.js
@@ -1,3 +1,5 @@
+'use strict';
+
 /*@
 Ox.isArguments <f> Tests if a value is an arguments "array"
     (value) -> <b> True if the value is an arguments "array"