Bangkok, Nov. 22 -- A strong earthquake shook a border area between northern Thailand and Laos early Thursday, swaying high-rises in Bangkok and Vietnam's capital. Residents of Chiang Mai, northern Thailand's biggest city, felt prolonged shaking but saw no major damage. Chiang Mai resident Petchnoi Osathaphan said the long shaking left her feeling dizzy. "There are three new cracks at the baseboards and close to the windows," she said of her house near the Mae Ping River. High-rise buildings swayed slowly for half a minute in Bangkok, startling residents. Many online videos showed light fixtures swaying during the temblor. Vibrations were also felt in Hanoi, Vietnam. The US Geological Survey said the 6.1 magnitude quake was about 10 km below the surface. It was centered just inside Xaignabouli province in Laos, some 31 km from Chaloem Phra Kiat district in Thailand's Nan province, about 610 km north of Bangkok.ap...