Managing cookies
You can opt out of storing cookies on your device by changing the appropriate browser settings. You can also delete cookies stored on your device by deleting them from your browser history:
Google Chrome: Menu → "History" → "Clear history". In the window that appears, select next to "Remove the following items from" - "for all time". Select "Cookies and other website data". Click the "Clear History" button.
Safari: Menu "Settings" → "Privacy". In the "Cookies and website data" section, click the "Delete all website data" button
Opera: Menu "Settings" → "Delete personal data". In the window that appears, select "Delete session cookies" and "Delete all cookies" and click "Delete".
Mozilla Firefox: Menu → "Journal" → "Delete recent history". In the "Delete" field, select "All". Click on the arrow next to "Details" to view the list of log items. Select "Cookies" and check that the other items you want to save have not been marked for deletion. Click the "Delete Now" button.
Internet Explorer: Menu "Tools" → "Browser Options" → "General" → "Browser History" → "Delete...". Select "Cookies and website data" and check that the other items you want to save have not been marked for deletion. Click the "Delete" button.