### FRAMESET Examples

The first example divides the screen vertically in two (i.e., creates a top half and a bottom half).

    <FRAMESET rows="50%, 50%">
    ...the rest of the definition...
    </FRAMESET>

The next example creates three columns: the second has a fixed width of 250 pixels (useful, for example, to hold an image with a known size). The first receives 25% of the remaining space and the third 75% of the remaining space.

    <FRAMESET cols="1*,250,3*">
    ...the rest of the definition...
    </FRAMESET>

The next example creates a 2x3 grid of subspaces.

    <FRAMESET rows="30%,70%" cols="33%,34%,33%">
    ...the rest of the definition...
    </FRAMESET>

For the next example, suppose the browser window is currently 1000 pixels high. The first view is allotted 30% of the total height (300 pixels). The second view is specified to be exactly 400 pixels high. This leaves 300 pixels to be divided between the other two frames. The fourth frame's height is specified as "2*", so it is twice as high as the third frame, whose height is only "*" (equivalent to 1*). Therefore the third frame will be 100 pixels high and the fourth will be 200 pixels high.

    <FRAMESET rows="30%,400,*,2*">
    ...the rest of the definition...
    </FRAMESET>

Absolute lengths that do not sum to 100% of the real available space should be adjusted by the user agent. When underspecified, remaining space should be allotted proportionally to each view. When overspecified, each view should be reduced according to its specified proportion of the total space.

#### Nested frame sets

Framesets may be nested to any level.

In the following example, the outer FRAMESET divides the available space into three equal columns. The inner FRAMESET then divides the second area into two rows of unequal height.

    <FRAMESET cols="33%, 33%, 34%">
         ...contents of first frame...
         <FRAMESET rows="40%, 50%">
            ...contents of second frame, first row...
            ...contents of second frame, second row...
         </FRAMESET>
         ...contents of third frame...
    </FRAMESET>

#### Sharing data among frames

Authors may share data among several frames by including this data via an OBJECT element. Authors should include the OBJECT element in the HEAD element of a frameset document and name it with the id attribute. Any document that is the contents of a frame in the frameset may refer to this identifier.

The following example illustrates how a script might refer to an OBJECT element defined for an entire frameset:

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN"
       "http://www.w3.org/TR/REC-html40/frameset.dtd">
    <HTML>
    <HEAD>
    <TITLE>This is a frameset with OBJECT in the HEAD</TITLE>
    <!-- This OBJECT is not rendered! -->
    <OBJECT id="myobject" data="data.bar"></OBJECT>
    </HEAD>
    <FRAMESET>
        <FRAME src="bianca.html" name="bianca">
    </FRAMESET>
    </HTML>

    <!-- In bianca.html -->
    <HTML>
    <HEAD>
    <TITLE>Bianca's page</TITLE>
    </HEAD>
    <BODY>
    ...the beginning of the document...
    <P>
    <SCRIPT type="text/javascript">
    parent.myobject.myproperty
    </SCRIPT>
    ...the rest of the document...
    </BODY>
    </HTML>