Regarding Sikhism please contribute properly?

Is it compulsory for all Sikhs to keep Long hair, does it say in the guru Grant sahib. Or is it just Baptised and strict Sikhs who keep long hair someone please elaborate.
PS Sikhs who cut their hair are they still Sikhs.

I'm a Hindu so i don't know for certain but i believe it is only the the Khalsa (Baptised) Sikhs who must not cut their hair.

here is a link that may help.
http://www.allaboutsikhs.com/index.php?option=com_content&task=view&id=47

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Its frowned upon but there is so much more to being a Sikh than that .Long hair a Sikh does not make.My dad is a Sikh he cuts his hair he still worships and follows the core beliefs.

Khalsa was created about 175 years after the Guru Granth Sahib was complied by the 10Th Guru in 1699 to give Sikhs a unique identity and some more wonderful beliefs. But the majority of those who consider themselves Khalsa are not baptized or Strict Sikhs, they are hypocritical Sikhs

Because almost every 'Khalsa' breaks his religious laws. Of the 5 K?s the Kesh ( hair and beard, eyebrows, body hair ) is shown by a massive ( maybe 99 %, yes 99 % ) majority of the young 'Khalsa', weather they are in the UK or the fields of Punjab . Even the 'Khalsa's who keep the hair will reject 3 other physical symbols. For convenience sake - without batting an eyelid. Ask a religious 'Khalsa', - if you take so much trouble over maintaining your hair at the right length, do you keep ?the Kacha? ( large undergarment / drawers ) or do you wear a Calvein Klein brand of underwear. Do you keep ?the Kanga? ( comb ) of the right length or only a miniature Kanga ? for convenience sake ? The ?Kara? is convenient so almost everyone ( including I ) wear it.

Ive cut my hair, but im still a Sikh. Why should i be anything else ?

Yes, for an amritdhari Sikh, it is compulsory to keep your hair uncut. By definition, a Khalsa is a baptized Sikh, therefor all Khalse keep there hair. In the Sikh religion it is a bujjar kureit for an Amritdhari to cut their hair, which means that if they cut their hair they are no longer baptized. I live in an area widely popluated by Sikhs. All the amritdhari people here where the five 5's
no idea what "oops" is talking about..guess his definition of a Khalsa is different than mine?
A Sikh is anyone who follows the Sikh religion
A Khalsa is someone who takes amrit and follows the teachings of Sikhism
A gurmukh is someone who has attained God