better approach to rewinding, and restore rewind on expand if not from hover

src/Images/ImageCommon.coffee

@@ -1,14 +1,9 @@
 ImageCommon =
-  rewind: (post, el) ->
-    {file} = post
-    {thumb} = file
-    if file.isVideo
+  rewind: (el) ->
+    if el.nodeName is 'VIDEO'
       el.currentTime = 0 if el.readyState >= el.HAVE_METADATA
-      thumb.currentTime = 0 if file.videoThumb and thumb.readyState >= thumb.HAVE_METADATA
     else if /\.gif$/.test el.src
-      $.queueTask ->
-        el.src = el.src
-        thumb.src = thumb.src
+      $.queueTask -> el.src = el.src
 
   pushCache: (el) ->
     ImageCommon.cache = el

src/Images/ImageExpand.coffee

@@ -140,7 +140,7 @@ ImageExpand =
         el.pause()
         for eventName, cb of ImageExpand.videoCB
           $.off el, eventName, cb
-      ImageCommon.rewind post, el
+      ImageCommon.rewind file.thumb
       delete file.fullImage
       $.queueTask ->
         # XXX Work around Chrome/Chromium not firing mouseover on the thumbnail.
@@ -163,6 +163,8 @@ ImageExpand =
     else if ImageCommon.cache?.dataset.fullID is post.fullID
       el = file.fullImage = ImageCommon.popCache()
       $.on el, 'error', ImageExpand.error
+      ImageCommon.rewind el unless el.id is 'ihover'
+      el.removeAttribute 'id'
     else
       el = file.fullImage = $.el (if isVideo then 'video' else 'img')
       el.dataset.fullID = post.fullID

src/Images/ImageHover.coffee

@@ -30,7 +30,8 @@ ImageHover =
       el.dataset.fullID = post.fullID
       $.on el, 'error', error
       el.src = file.URL
-    ImageCommon.rewind post, el
+    ImageCommon.rewind el
+    ImageCommon.rewind @
     el.id = 'ihover'
     $.after Header.hover, el
     if isVideo
@@ -58,7 +59,6 @@ ImageHover =
         ImageCommon.pushCache el
         el.pause() if isVideo
         $.rm el
-        el.removeAttribute 'id'
         el.removeAttribute 'style'
   error: (post) -> ->
     return if ImageCommon.decodeError @, post