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Let's now life CSS affairs and move on to SSI - Server Side Includes.

Although in real world, it depends on guy/girl managing your server whether you can use SSIs or not, assuming you can use them, you should know how and why to use them. First, why?

The use is somewhat akin to external CSS. One change, and it is reflected through entire web site, even if there are thousands of pages.

The ideal use is navigation bar. Of course you know that every web site deserving to be called a web site must have a navigational system so that you can explore it in an amiable manner. On this web site - http://www.Bytesworth.com - if you can see those gray buttons on right hand side, they help you navigate through hundreds of information pages.

To facilitate hurdle-less navigation, these buttons should be on every page, so that you can immediately click to section of your desire, irrespective of where you are loafing around.

This is achieved by including line

Where "nav.inc" is some file you deem fit to include. The extension "inc" does not have any technical implication in this case - you can have any extension. Whatever code is there in included file, gets included in HTML file. So wherever you want to use include file's content, append above line where you want output to appear.

There is another way to include file such as , but for time being, you can do without it.

Including a navigation bar is not only utility of SSI's. You can come up with complex ASP and CGI codes to include in your page, but that is beyond scope of this tutorial, at least at moment.

Another thing to keep in my mind while making pages that are destined to have included files in them: there extension should be SHTML rather than HTML or HTM. This extension informs ignorant server that file being loaded is going to use SSIs.

In next section, we are going to deal with a navigation bar, and how to use tables (remember them?) for it. We'll also learn how to define bulleted list.

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You can have as many links as number of pages you want to be seen

You don't need to use Server Side Includes if your Web site consists of merely 6-7 pages because then you can just keep on copying and pasting navigation bar code at: