What is the size of the thông tin các nhân banner?

The way it shows up for me, it's 946 bởi 250, give hoặc take a few pixels. But I think there's thêm to it than that, because it adjusts itself to fit your browser. I đã đăng link comparison of the critter sizes last night hoping for some tips on how to size it. I'm looking phía trước, chuyển tiếp to making banners, too!