The Obama administration has responded to the pandemonium at recent health care town hall meetings by posting a new set of videos on the Web.

The videos include appearances by Melody Barnes, Obama’s domestic policy council, who explains that “a nasty rumor about euthanasia” is in correct, and Christina Romer, chair of the Council of Economic Advisors, who talks about health insurance law changes might affect small businesses.

Information about the videos is available here.

Meanwhile, Harris Interactive Inc., Rochester, N.Y., says a Web survey of 2,029 U.S. adults ages 18 and older shows support for Obama’s approach to changing the health care system has dropped since January.

About 52% of survey participants now say the proposed changes would provide more people with adequate insurance, down from 61%.

The percentage who say the changes would help the economy has dropped to 30%, from 42%, and the percentage who say the changes would hurt the economy has increased to 35%, from 19%.