--- a/src/marksheet.cpp	Tue Aug 27 18:50:00 2013 +0900
+++ b/src/marksheet.cpp	Wed Sep 11 19:09:14 2013 +0900
@@ -1,5 +1,5 @@
 // Filename   : marksheet.cpp
-// Last Change: 23-Aug-2013.
+// Last Change: 11-Sep-2013.
 //
 
 #include "common.h"
@@ -57,7 +57,7 @@
     return hhs;
 }
 
-bool IsMarksheet( wxString& file, float* brate, long* len, double zmin, double zmax, long lmin, long lmax )
+bool IsMarksheet( wxString& file, double zmin, double zmax, long lmin, long lmax )
 {
     wxImage img( file, wxBITMAP_TYPE_JPEG );
     int black = 0;
@@ -76,9 +76,7 @@
     wxFile f( file );
     long l = f.Length();
 
-    *brate = z;
-    *len = l;
-    //wxPuts(wxString::Format(wxT("z = %f, len = %d"),z,len));
+    //wxPuts(wxString::Format(wxT("z = %f, len = %d"),z,l));
     if ( zmin < z && z < zmax
       && lmin < l && l < lmax ) {
         return true;
@@ -86,36 +84,6 @@
     return false;
 }
 
-bool _IsMarksheet( wxString& file, float* brate, long* len )
-{
-    wxImage img( file, wxBITMAP_TYPE_JPEG );
-    int black = 0;
-    int x = 2465;
-    int h = 3500;
-    unsigned char r, g, b;
-
-    for ( int y=0; y<h; y++ ) {
-        r = img.GetRed(   x, y );
-        g = img.GetGreen( x, y );
-        b = img.GetBlue(  x, y );
-        if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
-    }
-    float z = (float)black / h;
-    float zmin = 0.095713; float zmax = 0.108600;
-
-    wxFile f( file );
-    long l = f.Length();
-    float lmin = 2072393; float lmax = 2346082;
-
-    *brate = z;
-    *len = l;
-    //wxPuts(wxString::Format(wxT("z = %f, len = %d"),z,len));
-    if ( zmin < z && z < zmax
-      && lmin < l && l < lmax ) {
-        return true;
-    }
-    return false;
-}
 
 wxString GetHhsName( wxString& hhsno )
 {