The invention relates to a method for blocking roaming steering mechanisms. The elevator apparatuses have cars and elevator doorways provided at each landing floor. The invention provides compounds and methods of treating Type II diabetes and obesity, comprising administering to a mammal in need thereof compounds of formula. A switching block member 13 provided with several abutment portions 52 and 53 with different heights, which are positioned so as to be opposed to a slide portion 12a at an upper end of a frame 12 extending in a vertical direction along a back of the carriage.