diff --git a/autoload/nerdtree.vim b/autoload/nerdtree.vim
index 5642220..4032c50 100644
--- a/autoload/nerdtree.vim
+++ b/autoload/nerdtree.vim
@@ -128,20 +128,6 @@ endfunction
 " SECTION: View Functions {{{1
 "============================================================
 "
-"FUNCTION: nerdtree#centerView() {{{2
-"centers the nerd tree window around the cursor (provided the nerd tree
-"options permit)
-function! nerdtree#centerView()
-    if g:NERDTreeAutoCenter
-        let current_line = winline()
-        let lines_to_top = current_line
-        let lines_to_bottom = winheight(nerdtree#getTreeWinNum()) - current_line
-        if lines_to_top < g:NERDTreeAutoCenterThreshold || lines_to_bottom < g:NERDTreeAutoCenterThreshold
-            normal! zz
-        endif
-    endif
-endfunction
-
 " FUNCTION: nerdtree#chRoot(node) {{{2
 " changes the current root to the selected one
 function! nerdtree#chRoot(node)
diff --git a/autoload/nerdtree/ui_glue.vim b/autoload/nerdtree/ui_glue.vim
index 0209472..6058350 100644
--- a/autoload/nerdtree/ui_glue.vim
+++ b/autoload/nerdtree/ui_glue.vim
@@ -243,7 +243,7 @@ endfunction
 function! s:displayHelp()
     let b:treeShowHelp = b:treeShowHelp ? 0 : 1
     call b:NERDTree.render()
-    call nerdtree#centerView()
+    call b:NERDTree.ui.centerView()
 endfunction
 
 " FUNCTION: s:findAndRevealPath() {{{1
@@ -372,7 +372,7 @@ function! s:jumpToChild(currentNode, direction)
 
     call targetNode.putCursorHere(1, 0)
 
-    call nerdtree#centerView()
+    call b:NERDTree.ui.centerView()
 endfunction
 
 
@@ -400,7 +400,7 @@ endfunction
 function! s:jumpToParent(node)
     if !empty(a:node.parent)
         call a:node.parent.putCursorHere(1, 0)
-        call nerdtree#centerView()
+        call b:NERDTree.ui.centerView()
     else
         call nerdtree#echo("cannot jump to parent")
     endif
@@ -410,7 +410,7 @@ endfunction
 " moves the cursor to the root node
 function! s:jumpToRoot()
     call b:NERDTreeRoot.putCursorHere(1, 0)
-    call nerdtree#centerView()
+    call b:NERDTree.ui.centerView()
 endfunction
 
 " FUNCTION: s:jumpToNextSibling(node) {{{1
@@ -434,7 +434,7 @@ function! s:jumpToSibling(currentNode, forward)
 
     if !empty(sibling)
         call sibling.putCursorHere(1, 0)
-        call nerdtree#centerView()
+        call b:NERDTree.ui.centerView()
     endif
 endfunction
 
@@ -570,53 +570,29 @@ function! s:showMenu(node)
 endfunction
 
 " FUNCTION: s:toggleIgnoreFilter() {{{1
-" toggles the use of the NERDTreeIgnore option
 function! s:toggleIgnoreFilter()
-    let b:NERDTreeIgnoreEnabled = !b:NERDTreeIgnoreEnabled
-    call b:NERDTree.ui.renderViewSavingPosition()
-    call nerdtree#centerView()
+    call b:NERDTree.ui.toggleIgnoreFilter()
 endfunction
 
 " FUNCTION: s:toggleShowBookmarks() {{{1
-" toggles the display of bookmarks
 function! s:toggleShowBookmarks()
-    let b:NERDTreeShowBookmarks = !b:NERDTreeShowBookmarks
-    if b:NERDTreeShowBookmarks
-        call b:NERDTree.render()
-        call nerdtree#putCursorOnBookmarkTable()
-    else
-        call b:NERDTree.ui.renderViewSavingPosition()
-    endif
-    call nerdtree#centerView()
+    call b:NERDTree.ui.toggleShowBookmarks()
 endfunction
 
 " FUNCTION: s:toggleShowFiles() {{{1
-" toggles the display of hidden files
 function! s:toggleShowFiles()
-    let b:NERDTreeShowFiles = !b:NERDTreeShowFiles
-    call b:NERDTree.ui.renderViewSavingPosition()
-    call nerdtree#centerView()
+    call b:NERDTree.ui.toggleShowFiles()
 endfunction
 
 " FUNCTION: s:toggleShowHidden() {{{1
 " toggles the display of hidden files
 function! s:toggleShowHidden()
-    let b:NERDTreeShowHidden = !b:NERDTreeShowHidden
-    call b:NERDTree.ui.renderViewSavingPosition()
-    call nerdtree#centerView()
+    call b:NERDTree.ui.toggleShowHidden()
 endfunction
 
 " FUNCTION: s:toggleZoom() {{{1
-" zoom (maximize/minimize) the NERDTree window
 function! s:toggleZoom()
-    if exists("b:NERDTreeZoomed") && b:NERDTreeZoomed
-        let size = exists("b:NERDTreeOldWindowSize") ? b:NERDTreeOldWindowSize : g:NERDTreeWinSize
-        exec "silent vertical resize ". size
-        let b:NERDTreeZoomed = 0
-    else
-        exec "vertical resize"
-        let b:NERDTreeZoomed = 1
-    endif
+    call b:NERDTree.ui.toggleZoom()
 endfunction
 
 "FUNCTION: nerdtree#ui_glue#upDir(keepState) {{{1
diff --git a/lib/nerdtree/ui.vim b/lib/nerdtree/ui.vim
index 003e566..ed93d80 100644
--- a/lib/nerdtree/ui.vim
+++ b/lib/nerdtree/ui.vim
@@ -3,6 +3,26 @@
 let s:UI = {}
 let g:NERDTreeUI = s:UI
 
+
+function! s:UI.lolcats()
+    echomsg "lolcats"
+endfunction
+
+"FUNCTION: s:UI.centerView() {{{2
+"centers the nerd tree window around the cursor (provided the nerd tree
+"options permit)
+function! s:UI.centerView()
+    if g:NERDTreeAutoCenter
+        let current_line = winline()
+        let lines_to_top = current_line
+        let lines_to_bottom = winheight(nerdtree#getTreeWinNum()) - current_line
+        if lines_to_top < g:NERDTreeAutoCenterThreshold || lines_to_bottom < g:NERDTreeAutoCenterThreshold
+            normal! zz
+        endif
+    endif
+endfunction
+
+"FUNCTION: s:UI.new(nerdtree) {{{1
 function! s:UI.New(nerdtree)
     let newObj = copy(self)
     let newObj.nerdtree = a:nerdtree
@@ -260,3 +280,53 @@ function! s:UI.renderViewSavingPosition()
         call currentNode.putCursorHere(0, 0)
     endif
 endfunction
+
+" FUNCTION: s:UI.toggleIgnoreFilter() {{{1
+" toggles the use of the NERDTreeIgnore option
+function! s:UI.toggleIgnoreFilter()
+    let b:NERDTreeIgnoreEnabled = !b:NERDTreeIgnoreEnabled
+    call b:NERDTree.ui.renderViewSavingPosition()
+    call b:NERDTree.ui.centerView()
+endfunction
+
+" FUNCTION: s:UI.toggleShowBookmarks() {{{1
+" toggles the display of bookmarks
+function! s:UI.toggleShowBookmarks()
+    let b:NERDTreeShowBookmarks = !b:NERDTreeShowBookmarks
+    if b:NERDTreeShowBookmarks
+        call b:NERDTree.render()
+        call nerdtree#putCursorOnBookmarkTable()
+    else
+        call b:NERDTree.ui.renderViewSavingPosition()
+    endif
+    call b:NERDTree.ui.centerView()
+endfunction
+
+" FUNCTION: s:UI.toggleShowFiles() {{{1
+" toggles the display of hidden files
+function! s:UI.toggleShowFiles()
+    let b:NERDTreeShowFiles = !b:NERDTreeShowFiles
+    call b:NERDTree.ui.renderViewSavingPosition()
+    call b:NERDTree.ui.centerView()
+endfunction
+
+" FUNCTION: s:UI.toggleShowHidden() {{{1
+" toggles the display of hidden files
+function! s:UI.toggleShowHidden()
+    let b:NERDTreeShowHidden = !b:NERDTreeShowHidden
+    call b:NERDTree.ui.renderViewSavingPosition()
+    call self.centerView()
+endfunction
+
+" FUNCTION: s:UI.toggleZoom() {{{1
+" zoom (maximize/minimize) the NERDTree window
+function! s:UI.toggleZoom()
+    if exists("b:NERDTreeZoomed") && b:NERDTreeZoomed
+        let size = exists("b:NERDTreeOldWindowSize") ? b:NERDTreeOldWindowSize : g:NERDTreeWinSize
+        exec "silent vertical resize ". size
+        let b:NERDTreeZoomed = 0
+    else
+        exec "vertical resize"
+        let b:NERDTreeZoomed = 1
+    endif
+endfunction