SAN FRANCISCO — Court documents show Barry Bonds tested positive for three types of steroids, and his personal trainer once told his business manager in the Giants' clubhouse how he injected the slugger with performance-enhancing drugs "all over the place."

Prosecutors plan to use those positive test results and other evidence, detailed in documents released Wednesday, at Bonds' trial next month to try to prove he lied when he told a federal grand jury in December 2003 that he never knowingly used steroids.

The release of documents by U.S. District Court Judge Susan Illston set the stage for a hearing today to decide what evidence to allow jurors to hear.

Hundreds of pages of documents show how the prosecution intends to prove its case without the cooperation of Bonds' personal trainer Greg Anderson, whose previous refusals to testify resulted in a yearlong prison stint for contempt. And his lawyer, Mark Geragos, said Anderson again will refuse to discuss Bonds if prosecutors call him to testify.

Also among the evidence made public were a positive test for amphetamines in 2006 in a urine sample Bonds gave to Major League Baseball; doping calendars Anderson maintained with the initials "BB" and a handwritten note seized from his house labeled "Barry" that appears to be a laundry list of steroids and planned blood tests; and a list of current and former major leaguers, including Jason Giambi, who are expected to testify at the March 2 trial.

While jurors may not hear Anderson testify about Bonds, prosecutors want jurors to hear the personal trainer's voice on a recording made by Bonds' former personal assistant Steve Hoskins in March 2003.

The documents said Hoskins, Bonds' childhood friend, secretly tape-recorded a 2003 conversation with Anderson in the Giants' clubhouse because Hoskins wanted to prove to Bonds' father, Bobby Bonds, that his son was using steroids.

Anderson and Hoskins, who were near Bonds' locker, were discussing steroid injections, and at one point, they lowered their voices to avoid being overheard as players, including Benito Santiago, and others walked by, according to the documents.

Anderson: "No, what happens is, they put too much in one area, and ... actually ball up and puddle. And what happens is, it actually will eat away and make an indentation. And it's a cyst. It makes a big (expletive) cyst. And you have to drain it. Oh yeah, it's gnarly. ... Hi Benito. ... Oh it's gnarly."

Hoskins: "... Is that why Barry's didn't do it in one spot, and you didn't just let him do it one time?"

Anderson: "Oh no. I never. I never just go there. I move it all over the place."