| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 11/13/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/09/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/09/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/09/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/09/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 10/18/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 10/17/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 10/17/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 10/17/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 10/04/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 
