With frames, we 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 <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
• 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:
<frame src="frame_a.htm"> <frame src="frame_b.htm">
• The frameset column size value can also be set in pixels (cols="200,500"), and one of the columns can be set to use the remaining space (cols="25%,*").
• You cannot use the <body></body> tags together with the <frameset></frameset> tags!
The disadvantages of using frames are:
• The web developer must keep track of more HTML documents
• It is difficult to print the entire page