Frames are generated by three things: FRAMESET tags,
FRAME tags, and Frame Documents.
A Frame Document has a basic structure very much like your normal
HTML document, except the BODY container is replaced by a
FRAMESET container which describes the sub-HTML documents, or Frames,
that will make up the page.
Frame syntax is similar in scope and complexity to that used by tables,
and has been designed to be quickly processed by Internet client layout engines.
- This is the main container for a Frame. It has 2 attributes
ROWS and COLS. A frame document has no BODY, and no tags that
would normally be placed in the BODY can appear before the FRAMESET tag,
or the FRAMESET will be ignored. The FRAMESET tag has a matching end tag,
and within the FRAMESET you can only have other nested FRAMESET tags, FRAME
tags, or the NOFRAMES tag.
- The ROWS attribute takes as its value a comma separated list of values.
These values can be absolute pixel values, percentage values between 1 and
100, or relative scaling values. The number of rows is implicit in the number
of elements in the list. Since the total height of all the rows must equal
the height of the window, row heights might be normalized to achieve this.
A missing ROWS attribute is interpreted as a single row arbitrarily sized
- Syntax of value list.
- A simple numeric value is assumed to be a fixed size in pixels. This
is the most dangerous type of value to use since the size of the viewer's
window can and does vary substantially. If fixed pixel values are used, it
will almost certainly be necessary to mix them with one or more of the relative
size values described below. Otherwise the client engine will likely override
your specified pixel value to ensure that the total proportions of the frame
are 100% of the width and height of the user's window.
- This is a simple percentage value between 1 and 100. If the total is
greater than 100 all percentages are scaled down. If the total is less than
100, and relative-sized frames exist, extra space will be given to
them. If there are no relative-sized frames, all percentages will be scaled
up to match a total of 100%.
- The value on this field is optional. A single '*' character is a
"relative-sized" frame and is interpreted as a request to give the frame
all remaining space. If there exist multiple relative-sized frames, the remaining
space is divided evenly among them. If there is a value in front of the '*',
that frame gets that much more relative space. "2*,*" would give 2/3 of the
space to the first frame, and 1/3 to the second.
- Example for 3 rows, the first and the last being smaller than the
for 3 rows, the first and the last being fixed height, with the remaining
space assigned to the middle row:
- The COLS attribute takes as its value a comma separated list of values
that is of the exact same syntax as the list described above for the
The FRAMESET tag can be nested inside other FRAMESET tags.
In this case the complete subframe is placed in the space that would be used
for the corresponding frame if this had been a FRAME tag instead of a nested
- This tag defines a single frame in a frameset. It has 6 possible attributes:
SRC, NAME, MARGINWIDTH, MARGINHEIGHT,
SCROLLING, and NORESIZE. The FRAME tag is not a container so
it has no matching end tag.
- The SRC attribute takes as its value the URL of the document to be displayed
in this particular frame. FRAMEs without SRC attributes are displayed as
a blank space the size the frame would have been.
- The NAME attribute is used to assign a name to a frame so it can be targeted
by links in other documents (These are usually from other frames in the same
document.) The NAME attribute is optional; by default all windows are unnamed.
- Names must begin with an alphanumeric character.
- Named frames can have their window contents targeted with the new TARGET attribute.
- The MARGINWIDTH attribute is used when the document author wants some
control of the margins for this frame. If specified, the value for
MARGINWIDTH is in pixels. Margins can not be less than one-so that frame
objects will not touch frame edges-and can not be specified so that there
is no space for the document contents. The MARGINWIDTH attribute is optional;
by default, all frames default to letting the browser decide on an appropriate
- The MARGINHEIGHT attribute is just like MARGINWIDTH above, except it
controls the upper an lower margins instead of the left and right margins.
- The SCROLLING attribute is used to describe if the frame should have
a scrollbar or not. Yes results in scrollbars always being visible
on that frame. No results in scrollbars never being visible.
Auto instructs the browser to decide whether scrollbars are needed,
and place them where necessary. The SCROLLING attribute is optional; the
default value is auto.
- The NORESIZE attribute has no value. It is a flag that indicates that
the frame is not resizable by the user. Users typically resize frames by
draggin a frame edge to a new position. Note that if any frame adjacent to
an edge is not resizable, that entire edge will be restricted from moving.
This will effect the resizability of other frames