part fix popup list (select banlist)

Assets/NGUI/Scripts/Interaction/UIPopupList.cs

@@ -202,6 +202,7 @@ public class UIPopupList : UIWidgetContainer
 
 	[System.NonSerialized] protected GameObject mSelection;
 	[System.NonSerialized] protected int mOpenFrame = 0;
+	[System.NonSerialized] protected float mInitialY = 0f;
 
 	// Deprecated functionality
 	[HideInInspector][SerializeField] GameObject eventReceiver;
@@ -1095,6 +1096,7 @@ public class UIPopupList : UIWidgetContainer
 			pos.x = Mathf.Round(pos.x);
 			pos.y = Mathf.Round(pos.y);
 			t.localPosition = pos;
+			mInitialY = pos.y;
 		}
 		else OnSelect(false);
         if (mChild != null)
@@ -1138,7 +1140,8 @@ public class UIPopupList : UIWidgetContainer
         }
         else
         {
-            float whole = items.Count * 20;
+            //float labelHeight = activeFontSize * activeFontScale;
+            //float whole = (labelHeight + padding.y) * items.Count + mBgBorder;
             float l=delta *100f;
             if (go.layer == Program.I().ui_windows_2d.layer)
             {
@@ -1172,9 +1175,9 @@ public class UIPopupList : UIWidgetContainer
             a.y += l;
             a.z = 0;
             timeScroller = Program.TimePassed();
-            if (a.y > whole)
+            if (a.y > mInitialY)
             {
-                a.y = whole;
+                a.y = mInitialY;
             }
             if (a.y < 0)
             {