add 'OxMedia' class to video widgets

source/Ox.UI/js/Video/LargeVideoTimeline.js

@@ -39,7 +39,7 @@ Ox.LargeVideoTimeline = function(options, self) {
                 type: setType,
                 width: setWidth
             })
-            .addClass('OxLargeVideoTimeline')
+            .addClass('OxLargeVideoTimeline OxMedia')
             .mouseleave(mouseleave)
             .mousemove(mousemove)
             .bindEvent({

source/Ox.UI/js/Video/VideoEditor.js

@@ -277,7 +277,7 @@ Ox.VideoEditor = function(options, self) {
     self.words = getWords();
 
     self.$editor = Ox.Element()
-        .addClass('OxVideoEditor')
+        .addClass('OxVideoEditor OxMedia')
         .mousedown(function(e) {
             var $target = $(e.target);
             !$target.is('.OxPosition') && !$target.is('input') && that.gainFocus();

source/Ox.UI/js/Video/VideoTimelinePlayer.js

@@ -141,6 +141,7 @@ Ox.VideoTimelinePlayer = function(options, self) {
         .appendTo(self.$menubar);
 
     self.$timelinePlayer = Ox.Element()
+        .addClass('OxMedia')
         .css({overflowX: 'hidden', overflowY: 'auto'})
         .on({
             mousedown: mousedown,