diff --git a/src/chart/Chart.java b/src/chart/Chart.java
index 5f4dc5a..434abbf 100644
--- a/src/chart/Chart.java
+++ b/src/chart/Chart.java
@@ -12,14 +12,7 @@ import java.awt.*;
 import sesim.Exchange.*;
 import sesim.Quote;
 import gui.Globals;
-import java.awt.geom.Rectangle2D;
-import java.text.DateFormat;
-import java.text.SimpleDateFormat;
 import java.util.ArrayList;
-import java.util.Date;
-import java.util.Iterator;
-import javax.swing.JMenuItem;
-import javax.swing.JScrollPane;
 import javax.swing.JViewport;
 import javax.swing.Scrollable;
 import sesim.MinMax;