File list (Check if you may need any files):
html框架设计
............\Demo_files
............\..........\bottom.html
............\..........\center.html
............\..........\display.html
............\..........\index.html
............\..........\right.html
............\..........\top.html
............\frame.htm
............\frame_files
............\...........\a.htm
............\...........\a_002.htm
............\...........\a_003.htm
............\...........\a_004.htm
............\...........\frame_files
............\...........\...........\a.htm
............\...........\...........\a_002.htm