Amends the Juvenile Court Act of 1987. Provides that if the minor has multiple delinquency petitions filed against him or her, remaining petitions pending against the minor respondent shall be adjudicated within 120 (rather than 160) days from the date on which a finding relative to the first petition prosecuted is rendered. Restructures the provisions concerning alleged delinquent minors and pretrial detention of alleged delinquent minors.