diff --git a/src/yanzm/products/quickaction/lib/QuickAction.java b/src/yanzm/products/quickaction/lib/QuickAction.java
index c8185c9..54c6590 100644
--- a/src/yanzm/products/quickaction/lib/QuickAction.java
+++ b/src/yanzm/products/quickaction/lib/QuickAction.java
@@ -190,8 +190,8 @@ public void setLayoutId(int layoutId, int layoutStyle) {
 
 		switch (layoutStyle) {
 			case STYLE_LIST:
-				scroller	= null;		
-				setAnimTrackEnabled(false);
+				scroller	= (ScrollView) rootView.findViewById(R.id.scroller);
+				setAnimTrackEnabled(true);
 				break;
 				
 			case STYLE_BUTTON:
@@ -326,8 +326,10 @@ private void showListStyle() {
 		if (isOnTop) {
 			if (rootHeight > dyTop) {
 				yPos = 15;
-				LayoutParams l = scroller.getLayoutParams();
+				if (scroller != null) {
+					LayoutParams l = scroller.getLayoutParams();
 				l.height = dyTop - anchor.getHeight();
+				}
 			} else {
 				yPos = anchorRect.top - rootHeight;
 			}