So I checked on GOOGLE and found out that it was because of special characters.
In jQuery's selector, if you want to use special characters, you need to escape them with "\", otherwise you will not be able to find what you want
Official document location: http://docs.jquery.com/Frequently_Asked_Questions#How_do_I_select_an_element_by_an_ID_that_has_characters_used_in_CSS_notation.3F