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This paper has been withdrawn by the author due to the paper does not belong to Condensed Matter field.

This paper has been withdrawn by the authors due to an unlikely results.

This paper has been withdrawn by the author, since the author does not have enough time to answer every questions on this result.

This paper has been withdrawn by the author, due a crucial error in Eq. 6.

This paper has been withdrawn by the author.

This paper has been withdrawn by the authors because the paper is largely revised and improved, and to appear in Mechanics Research Communications.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author due to an error in the data-analysis.

This paper has been withdrawn by the author(s), due to the existence of a much better paper in http://arxiv.org/abs/cs.CR/0207027

This paper has been withdrawn by the author.

This paper has been withdrawn.

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author(s), due the final version in math.QA/0604564

This paper has been withdrawn by the author, due to a crucial error in page 5.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author(s), due a crucial sign error in conclusion .

This paper has been withdrawn due to an incorrect proof.

This paper has been withdrawn by the author, because a better treatment is given in the author's Phd. thesis (Sections 3.4.6 and 4.4), now available on the arxiv.

This paper has been withdrawn by the author