Hi sir.
Thank you for your post,
I read your description carefully,
As being an expert in javascript and PHP, i am very interesting in your assignment,
I have gained enough experiences in making callback with javascript and PHP and AJAX technique.
For example, i have ever developed a variety of chart assignment with PHP and AJAX techingues,
I can satisfy you with good result,
Let's do together with your assignment,
Waiting for your kind reply,
Sincerely, thank you,