Los Angeles County Superior Court officials announced Tuesday they would shut down court operations one day a month and furlough employees to address a projected $90-million shortfall caused by the state's continuing budget crisis.

The county's 600 courtrooms and all court services including traffic matters will be closed the third Wednesday of each month, starting July 15, saving about $18 million annually, court officials said. Chief Justice Ronald George of the California Supreme Court is considering taking the monthly closures statewide, officials said.

If the financial situation does not improve, the courts could eventually lay off as many as 1,300 employees, or a quarter of the workforce, in the next four years, said Charles "Tim" McCoy, presiding judge of the county's court system. Such cuts would lead to total closure of some courthouses and massive cuts in court services, he said.

"The justice system provides public safety. That system needs to be operating five days a week," McCoy said at a news conference. The monthly closure plan, he said, "puts the public at some risk."

McCoy said a handful of courtrooms would remain open on the furlough days to handle emergency matters. He said he anticipated a backlog of cases to build up as a result of the closures.

An administration official says the Democratic governor is coming to the White House for an event unrelated to the Supreme Court. It is not clear whether Granholm will be meeting with Obama about the upcoming vacancy on the court.

The official spoke on condition of anonymity because details of Tuesday's event have not been announced.

Granholm is among more than six people Obama is considering for the seat on the court now held by Justice David Souter, who is retiring this summer.

The 50-year-old Granholm is a former federal prosecutor and Michigan attorney general.

The 9th U.S. Circuit Court of Appeals reaffirms that Internet service providers such as Yahoo Inc. are generally protected from liability for materials published or posted on their sites by outside parties.

Cecilia Barnes had filed a lawsuit in 2005 in Portland, Ore., claiming her boyfriend not only posted nude photos, but also created a fraudulent profile and posed as her in an online chat room to solicit sex.

Although the court says Yahoo isn't liable for those actions, it left open the possibility that Barnes could sue Yahoo over whether it had promised to remove the photos and the profile.

Thomas said Thursday that his chair was empty that day in November 2006 because he took a spill the night before.

"I had the wonderful opportunity to fall on my face one night and was not able to make oral argument the following day as a result of it," he said at a hearing of a House appropriations subcommittee on the court's budget for the next year.

Thomas didn't identify the arguments he missed, but court officials said later he was referring to the abortion case. Thomas voted to uphold the federal ban.

The accident came up Thursday as part of an account about how well the court's Web site works and a plea for an extra $800,000 for the site.

Since October 2006, the court has been making argument transcripts available the same day a case is argued.

"In order to stay up to speed on the case and what occurred at oral argument, I simply went to our Web site later that day and it was there," Thomas said.

But McMaster said in a filing with the Supreme Court on Monday that he won't oppose the state Supreme Court taking up the challenge filed last week by a Chapin High School student.

McMaster says the timing may not be right to shift the issues raised in the case from a public policy debate to the courtroom.

Instead, Kagan, confirmed by the Senate last month as solicitor general, will wait until the fall to make her debut, Justice Department spokeswoman Beverley Lumpkin said Tuesday.

By the time Kagan took up her post, Lumpkin said, most of the cases the court will hear in April already had been assigned.

"I suppose she could have spent the last several weeks doing nothing but preparing, but that's not something she wanted to do. There's a lot to do getting up to speed in the office," Lumpkin said.

The solicitor general typically handles the top cases before the court. The challenge to a provision of the Voting Rights Act, which will be argued April 29, is perhaps this term's highest-profile case.

Kagan has a most impressive resume — former Harvard Law School dean, Clinton White House official and Supreme Court clerk — but she has little courtroom experience.