Remove the Download Link config on non-crx extensions.

src/config.coffee

@@ -33,7 +33,9 @@ Config =
       'Thread Hiding Link':           [true,  'Add a link to hide entire threads.']
       'Reply Hiding Link':            [true,  'Add a link to hide single replies.']
       'Delete Link':                  [true,  'Add post and image deletion links to the menu.']
-      'Download Link':                [true,  'Add a download with original filename link to the menu. Chrome-only currently.']
+      <% if (type === 'crx') { %>
+      'Download Link':                [true,  'Add a download with original filename link to the menu.']
+      <% } %>
       'Archive Link':                 [true,  'Add an archive link to the menu.']
     'Monitoring':
       'Thread Updater':               [true,  'Fetch and insert new replies. Has more options in its own dialog.']

src/features.coffee

@@ -1737,15 +1737,8 @@ DeleteLink =
 
 DownloadLink =
   init: ->
-    <% if (type === 'userscript') { %>
-    # Firefox won't let us download cross-domain content.
-    return
-    <% } %>
     return if g.VIEW is 'catalog' or !Conf['Menu'] or !Conf['Download Link']
 
-    # Test for download feature support.
-    return unless 'download' of $.el 'a'
-
     a = $.el 'a',
       className: 'download-link'
       textContent: 'Download file'

src/qr.coffee

@@ -791,7 +791,7 @@ QR =
     QR.mimeTypes = mimeTypes.split ', '
     # Add empty mimeType to avoid errors with URLs selected in Window's file dialog.
     QR.mimeTypes.push ''
-    nodes.fileInput.max    = $('input[name=MAX_FILE_SIZE]').value
+    nodes.fileInput.max = $('input[name=MAX_FILE_SIZE]').value
     <% if (type !== 'userjs') { %>
     # Opera's accept attribute is fucked up
     nodes.fileInput.accept = "text/*, #{mimeTypes}"
@@ -826,8 +826,8 @@ QR =
       $.on elm, 'blur',  QR.focusout
       $.on elm, 'focus', QR.focusin
     <% } %>
-    $.on QR.nodes.el, 'focusin',  QR.focusin
-    $.on QR.nodes.el, 'focusout', QR.focusout
+    $.on dialog,          'focusin',  QR.focusin
+    $.on dialog,          'focusout', QR.focusout
     for node in [nodes.fileButton, nodes.filename.parentNode]
       $.on node,           'click',  QR.openFileInput
     $.on nodes.autohide,   'change', QR.toggleHide