forms select option filtering by input text.

i was needed it for drunksick.com market to filter items by inputted text.

example:
aaab
asd
qweeq

if you input 'as' it will show only 'asd', other ones will be hidden. you can get script and example from here:
http://www.barelyfitz.com/projects/filterlist/index.php/2

helped me out..