canvas.toDataUrl shows security error on safari only.I have handled CORS in both javascript and server conf.How to fix this security issue?

OBJECTIVE:

convert canvas to image(PNG) using JavaScript.

PROBLEM DESCRIPTION:

I have create webpage which generate canvas from multiple images(different origin).I have handled CORS in JavaScript and htaccess. After doing this other browsers didn't show that error but safari still shows that and dint allow me to create image from this canvas.Please provide the suggestion to fix this problem.