how stop showing "A" List by default?

hi

how r u doing?
I almost cried to make all changes I need. but the plugin is very useful. I have two questions:

1. I have many many categories so when page loads the plugin shows first letter (A) list by default. I want to not doing this. by default no categories should load and show because of page load and speed. how can I do this? it’s very important actually.

2. I have categories starting with numbers. like “6FU”. I don’t have enough coding experiment to add this before “A” but I learn fast if there is a way to do this with editing let me know.

actually if we can add numberic categories button before “A” it should load that list by default and they are not many so I don’t need the answer of first question.

thanks for your time

http://wordpress.org/plugins/a-to-z-category-listing/