SSI is short for Server-Side Included, and with it you can include other documents within one page. It is very useful for websites, the banner, the left and right navigation bars, are totally seperate pages, and because you have to update them frequently, instead of changing every page, you only have to change one page!
This is what you have to do......
1. Create a page called top.html, with your banner on it if you want, then a page called left.html and a page also called right.html page. (You may name the pages whatever you want, I am just making it easier for you.) Now, make a page called index.shtml or what ever you want it called but it has to have the .shtml after it
2. In the HTML of index.shtml, the first thing you put between the body tags is:
This will place your banner on the top of the page.
3. Next, below that, make a 3-coloum table with a width of 100% (ex. left coloum=20% middle coloum=60% & right coloum=20%)
4. In the left coloum, place this code:
...and in the right coloum:
5. Upload all of the pages to a server of your choice (make sure it supports SSI) a free server that supports SSI is Angelfire and take a look at the page, success?