How to order attribute options of person attribute

Dears,
I created a person attribute (named client-type) and made a registration form to put it in.

Client type attribute has 5 options: 4 By UHN, 2 By staff, 1 Walk-in, 5 Other, 3 By CM

The order get change base on the name of attribute options.

I used hard code javascript to order those options in a dropdown list.
Is there any way to do this dynamically?

Thank you very much,

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Thai Chuong
HCMUT - Computer science and engineering Faculty

Website: http://thuytruc.net

YM/Skype : thaichuong159
Email: thaichuong159@gmail.com
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