Spider-Man (and Tobey Maguire) fans, mark your calendars for a happy Independence Day in 2004.

"The Amazing Spider-Man," the sequel to last year's box-office champ, will go into web-slinging production on April 12, but tight schedules have caused Sony to roll back the film's release from May 7, 2004, to July 2, reports Variety.

The good news: Tobey Maguire is still onboard to reprise his role as the arachnid superhero -- despite recent talk that a bad back might sideline the actor.

The movie's two-month delay was caused not by Maguire's recent complaints of an injured back, but from his starring role in the upcoming film "Seabiscuit," in which he plays jockey Red Pollard. Production on the horseracing flick wrapped in February, a month after "The Amazing Spider-Man" was scheduled to begin.

Trade papers reported last week that Maguire, 27, was nursing an injured back that could have left him out of the sequel to last year's highest-grossing film. "The Good Girl"'s Jake Gyllenhaal (who happens to be the boyfriend of "Spider-Man"'s Kirsten Dunst) was under consideration to replace Maguire in the title role.

Fortunately, Maguire -- who Variety reports will earn an estimated $17 million for the sequel, more than four times his payday for the original -- determined that his back was sufficiently healed to report to work.

But even though the production is back on track for an April start date, the filmmakers will have to move quickly. Dunst, who reprises her role as Peter Parker's love Mary Jane Watson, is committed to report to her next project, "Wimbledon," in June, reports Variety.