Dear Sir,
I just read your job description carefully and understood your requirements. I know the solution of how to implement this problem, have been worked on the similar project before.
My current availability is open and will finish it in 2 hours. I'm a Joomla expert with strong PHP/Javascript/CSS skills.
As a full-time freelancer, I can keep your deadline, best quality, and maintenance, work on your timezone.
Regard.