Establish a frame (fixed at the top and nested on the left) for making menus on the left and displaying specific contents on the right.

1. Write the menu first, such as option 1, option 2 and option 3.

2. Create three new webpages, such as three webpages named content1content2content 3, and keep them well.

3. Now point the connection of option 1 to content 1, point the connection of option 2 to content 2, and do the same for option 3.