A Continental Airlines jet taking off from the Denver airport went off the runway and caught fire Saturday night, forcing more than 100 passengers to evacuate on emergency slides and injuring at least seven people, officials said. A fire broke out, but ground crews put out the flames quickly, said Denver International Airport spokesman Jeff Green. The 112 people on board made it out on through slides on the Boeing 737. Continental Flight 1404 was leaving Denver for Houston, said Laura Brown, spokeswoman for the Federal Aviation Administration. The weather in Denver was cold but not snowy at the time, and roads to the airport were dry. The plane was carrying 107 passengers and five crew members, said Continental spokeswoman Mary Clark. She did not immediately have other details.