11 char XSS (insane race-condition)

Should work on both Chrome and Firefox.
Check out my all solutions:

• 11 char XSS with fancy race-conditons
• 11 char XSS with tricky race-conditions (older version)
• 12 char XSS with race-condition
• 12 char with utilizing run() method
• 13 char XSS with fast race-condition
• 12 char XSS with open()
• 11 char XSS with open() and slower race-condition