The <frameset> tag helps to split your screen into two parts.
For this, you usually have to make three html pages.
Its simple. First, You have to decide wether you want the page divided as rows or as columns.
<frame src=”Links.html” name=”Links”>
<frame src=”Main.html” name=”Main”>
On launching the above program, a page with two rows will open.
You also usually add the <frameset rows=” ” noresize> Element to prevent the user from fiddling around with the frameset.
You will also have to make two separate pages in the same folder, with names that will go in the src attribute.
If you have any questions look at http://www.w3schools.com/tags/tag_frameset.asp
I will also post a sample program. That should explain things further. But as we go ahead, you will see that frameset is not used anywhere. We normally use div tags. But for now, lets just stick to this.