What is the subsitute for frames
Lets say I have a web site with 50 web pages. Each page consists of

1 - A Header
2 - Navigation
3 - Left Side Content
4 - Right Side Content
5 - Footer

Without using

1 - Frames
2 - Server side programming
3 - Third part tools and softwares
4 - Frameworks

I would need to put the code (HTML Markup) for each of these 5 sections in each of those 50 pages? What happened to the term "Code Once, Use Again & Again"? Also If I want to change any thing, I would need to change it at 50 places. This is just reduntant. Can I use as such.

    <object type="text/html" height="100%" width="100%" data="header.html"></object>

Excuse my stupid questions. Learning the hardway!
What is the subsitute for frames
===

Lets say I have a web site with 50 web pages. Each page consists of

1 - A Header
2 - Navigation
3 - Left Side Content
4 - Right Side Content
5 - Footer

Without using

1 - Frames
2 - Server side programming
3 - Third part tools and softwares
4 - Frameworks

I would need to put the code (HTML Markup) for each of these 5 sections in each of those 50 pages? What happened to the term "Code Once, Use Again & Again"? Also If I want to change any thing, I would need to change it at 50 places. This is just reduntant. Can I use as such.

    <object type="text/html" height="100%" width="100%" data="header.html"></object>

Excuse my stupid questions. Learning the hardway!