HTML Frames:
Frames
With frames, you can display more than one HTML document in the same browser window. Each HTML document is called a frame, and each frame is independent of the others.

The disadvantages of using frames are:

The web developer must keep track of more HTML documents
It is difficult to print the entire page

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The Frameset Tag
The <frameset> tag defines how to divide the window into frames
Each frameset defines a set of rows or columns
The values of the rows/columns indicate the amount of screen area each row/column will occupy

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The Frame Tag
The <frame> tag defines what HTML document to put into each frame
In the example below we have a frameset with two columns. The first column is set to 25% of the width of the browser window. The second column is set to 75% of the width of the browser window. The HTML document "frame_a.htm" is put into the first column, and the HTML document "frame_b.htm" is put into the second column:
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Basic Notes - Useful Tips
If a frame has visible borders, the user can resize it by dragging the border. To prevent a user from doing this, you can add noresize="noresize" to the <frame> tag.

Add the <noframes> tag for browsers that do not support frames
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Frame Tags
Tag Description
<frameset> Defines a set of frames
<frame> Defines a sub window (a frame)
<noframes> Defines a noframe section for browsers that do not handle frames
<iframe> Defines an inline sub window (frame)