diff --git a/stepmania/src/ActorFrame.h b/stepmania/src/ActorFrame.h
index d667e1c37c..10aa90ac9e 100644
--- a/stepmania/src/ActorFrame.h
+++ b/stepmania/src/ActorFrame.h
@@ -22,12 +22,14 @@ public:
 			lua_pushnil( L );
 		return 1;
 	}
+	static int GetNumChildren( T* p, lua_State *L )	{ lua_pushnumber( L, p->GetNumChildren() ); return 1; }
 
 	static void Register(lua_State *L) 
 	{
 		ADD_METHOD( propagate )
 		ADD_METHOD( SetUpdateRate )
 		ADD_METHOD( GetChild )
+		ADD_METHOD( GetNumChildren )
 		LunaActor<T>::Register( L );
 	}
 };
@@ -44,6 +46,7 @@ public:
 	virtual void AddChild( Actor* pActor );
 	virtual void RemoveChild( Actor* pActor );
 	Actor* GetChild( const CString &sName );
+	int GetNumChildren() const { return m_SubActors.size(); }
 
 	void RemoveAllChildren();
 	void MoveToTail( Actor* pActor );
diff --git a/stepmania/src/ActorScroller.cpp b/stepmania/src/ActorScroller.cpp
index 2381e985bc..9499020036 100644
--- a/stepmania/src/ActorScroller.cpp
+++ b/stepmania/src/ActorScroller.cpp
@@ -8,6 +8,10 @@
 #include "RageLog.h"
 #include "ActorUtil.h"
 
+// lua start
+LUA_REGISTER_CLASS( ActorScroller )
+// lua end
+
 /* Tricky: We need ActorFrames created in XML to auto delete their children.
  * We don't want classes that derive from ActorFrame to auto delete their 
  * children.  The name "ActorFrame" is widely used in XML, so we'll have
@@ -100,8 +104,8 @@ void ActorScroller::LoadFromNode( const CString &sDir, const XNode *pNode )
 		vTranslateTerm0,
 		vTranslateTerm1,
 		vTranslateTerm2 );
-	SetCurrentAndDestinationItem( int(-fItemPaddingStart) );
-	SetDestinationItem( int(m_SubActors.size()-1+fItemPaddingEnd) );
+	SetCurrentAndDestinationItem( -fItemPaddingStart );
+	SetDestinationItem( m_SubActors.size()-1+fItemPaddingEnd );
 }
 
 void ActorScroller::Update( float fDeltaTime )
diff --git a/stepmania/src/ActorScroller.h b/stepmania/src/ActorScroller.h
index e418224325..0d0d4cddab 100644
--- a/stepmania/src/ActorScroller.h
+++ b/stepmania/src/ActorScroller.h
@@ -4,8 +4,23 @@
 #define ActorScroller_H
 
 #include "ActorFrame.h"
-
 struct XNode;
+
+template<class T>
+class LunaActorScroller : public LunaActorFrame<T>
+{
+public:
+	LunaActorScroller() { LUA->Register( Register ); }
+
+	static int SetCurrentAndDestinationItem( T* p, lua_State *L )	{ p->SetCurrentAndDestinationItem( FArg(1) ); return 0; }
+
+	static void Register(lua_State *L) 
+	{
+		ADD_METHOD( SetCurrentAndDestinationItem )
+		LunaActor<T>::Register( L );
+	}
+};
+
 class ActorScroller : public ActorFrame
 {
 public:
@@ -23,8 +38,13 @@ public:
 	virtual void DrawPrimitives();	// DOES draw
 
 	void LoadFromNode( const CString &sDir, const XNode *pNode );
-	void SetDestinationItem( int iItem ) { m_fDestinationItem = float(iItem); }
-	void SetCurrentAndDestinationItem( int iItem ) { m_fCurrentItem = m_fDestinationItem = float(iItem); }
+	void SetDestinationItem( float fItemIndex ) { m_fDestinationItem = fItemIndex; }
+	void SetCurrentAndDestinationItem( float fItemIndex ) { m_fCurrentItem = m_fDestinationItem = fItemIndex; }
+
+	//
+	// Commands
+	//
+	void PushSelf( lua_State *L );
 
 protected:
 	bool		m_bLoaded;
diff --git a/stepmania/src/ScreenCredits.cpp b/stepmania/src/ScreenCredits.cpp
index 64dcdf10cc..8a2c9590e2 100644
--- a/stepmania/src/ScreenCredits.cpp
+++ b/stepmania/src/ScreenCredits.cpp
@@ -207,14 +207,15 @@ ScreenCredits::ScreenCredits( CString sName ) : ScreenAttract( sName )
 			pFrame->Load( THEME->GetPathG("ScreenCredits","background frame") );
 			m_ScrollerFrames.AddChild( pFrame );
 		}
-		const int iFirst = -2, iLast = NUM_BACKGROUNDS+2;
-		m_ScrollerBackgrounds.SetCurrentAndDestinationItem( iFirst );
-		m_ScrollerBackgrounds.SetDestinationItem( iLast );
+		float fFirst = -2;
+		float fLast = NUM_BACKGROUNDS+2;
+		m_ScrollerBackgrounds.SetCurrentAndDestinationItem( fFirst );
+		m_ScrollerBackgrounds.SetDestinationItem( fLast );
 
-		m_ScrollerFrames.SetCurrentAndDestinationItem( iFirst );
-		m_ScrollerFrames.SetDestinationItem( iLast );
+		m_ScrollerFrames.SetCurrentAndDestinationItem( fFirst );
+		m_ScrollerFrames.SetDestinationItem( fLast );
 
-		fTime = max( fTime, BACKGROUNDS_SCROLL_SECONDS_PER_ITEM*(iLast-iFirst) );
+		fTime = max( fTime, BACKGROUNDS_SCROLL_SECONDS_PER_ITEM*(fLast-fFirst) );
 	}
 	
 	m_ScrollerTexts.SetName( "Texts" );
@@ -245,10 +246,11 @@ ScreenCredits::ScreenCredits( CString sName ) : ScreenAttract( sName )
 			m_ScrollerTexts.AddChild( pText );
 		}
 
-		const int iFirst = -10, iLast = ARRAYSIZE(CREDIT_LINES)+10;
-		m_ScrollerTexts.SetCurrentAndDestinationItem( iFirst );
-		m_ScrollerTexts.SetDestinationItem( iLast );
-		fTime = max( fTime, TEXTS_SCROLL_SECONDS_PER_ITEM*(iLast-iFirst) );
+		float fFirst = -10;
+		float fLast = ARRAYSIZE(CREDIT_LINES)+10;
+		m_ScrollerTexts.SetCurrentAndDestinationItem( fFirst );
+		m_ScrollerTexts.SetDestinationItem( fLast );
+		fTime = max( fTime, TEXTS_SCROLL_SECONDS_PER_ITEM*(fLast-fFirst) );
 	}
 
 	m_Overlay.LoadFromAniDir( THEME->GetPathB("ScreenCredits","overlay") );
diff --git a/stepmania/src/ScreenNameEntryTraditional.cpp b/stepmania/src/ScreenNameEntryTraditional.cpp
index ab9f2c1850..090503278b 100644
--- a/stepmania/src/ScreenNameEntryTraditional.cpp
+++ b/stepmania/src/ScreenNameEntryTraditional.cpp
@@ -114,9 +114,9 @@ void HighScoreWheel::Load( const HighScoreList& hsl, int iIndexToFocus )
 
 float HighScoreWheel::Scroll()
 {
-	SetCurrentAndDestinationItem( m_SubActors.size()+5 );
+	SetCurrentAndDestinationItem( m_SubActors.size()+5.0f );
 	int iIndexToFocus = max( m_iIndexToFocus, 3 );
-	SetDestinationItem( iIndexToFocus );
+	SetDestinationItem( (float)iIndexToFocus );
 	return GetTweenTimeLeft();
 }
 
diff --git a/stepmania/src/ScreenSelectMaster.cpp b/stepmania/src/ScreenSelectMaster.cpp
index 0af297d5c8..a148f9ed40 100644
--- a/stepmania/src/ScreenSelectMaster.cpp
+++ b/stepmania/src/ScreenSelectMaster.cpp
@@ -560,9 +560,9 @@ bool ScreenSelectMaster::ChangeSelection( PlayerNumber pn, int iNewChoice )
 		if( SHOW_SCROLLER )
 		{
 			if( SHARED_PREVIEW_AND_CURSOR )
-				m_Scroller[0].SetDestinationItem( iNewChoice );
+				m_Scroller[0].SetDestinationItem( (float)iNewChoice );
 			else
-				m_Scroller[p].SetDestinationItem( iNewChoice );
+				m_Scroller[p].SetDestinationItem( (float)iNewChoice );
 
 			if( SHARED_PREVIEW_AND_CURSOR )
 				for( unsigned c=0; c<m_aGameCommands.size(); c++ )
@@ -748,7 +748,7 @@ void ScreenSelectMaster::TweenOnScreen()
 	{
 		if( SHARED_PREVIEW_AND_CURSOR )
 		{
-			m_Scroller[0].SetCurrentAndDestinationItem( m_iChoice[0] );
+			m_Scroller[0].SetCurrentAndDestinationItem( (float)m_iChoice[0] );
 			SET_XY_AND_ON_COMMAND( m_Scroller[0] );
 			for( unsigned c=0; c<m_aGameCommands.size(); c++ )
 				COMMAND( *m_sprScroll[c][0], int(c) == m_iChoice[0]? "GainFocus":"LoseFocus" );
@@ -756,7 +756,7 @@ void ScreenSelectMaster::TweenOnScreen()
 		else
 			FOREACH_HumanPlayer( p )
 			{
-				m_Scroller[p].SetCurrentAndDestinationItem( m_iChoice[p] );
+				m_Scroller[p].SetCurrentAndDestinationItem( (float)m_iChoice[p] );
 				SET_XY_AND_ON_COMMAND( m_Scroller[p] );
 				for( unsigned c=0; c<m_aGameCommands.size(); c++ )
 					COMMAND( *m_sprScroll[c][p], int(c) == m_iChoice[p]? "GainFocus":"LoseFocus" );