LAYER - positioned content
The LAYER tag allows
you to position blocks of contents. These blocks of positioned
content are also called layers. Positioned blocks of content can
overlap each other, be transparent or opaque, and be visible or
invisible. They can also be nested. Use the LAYER tag to specify
an absolute position for a block of content, and use the ILAYER
tag to specify a relative position.
LEFT="pixelPosition" TOP="pixelPosition" PAGEX
="pageX" PAGE"="pageY" SRC="file"
Z-INDEX="n" ABOVE="layername" BELOW="layername"
WIDTH="width" HEIGHT="height" CLIP="n,n,n,n"
OnMouseOut="JScode" OnFocus="JScode" OnBlur="JScode"
ID specifies the name of the layer, enabling
LEFT & TOP specifies the horizontal and
vertical positions of positioned layers or the relative horizontal
and vertical positions for inflow layers.
PAGEX & PAGEY specifies the horizontal and
vertical positions of the layer relative to the document's window.
SRC specifies the pathname of a file that
contains HTML-formatted content for the layer.
Z-INDEX specifies the stacking order of a layer.
Allows a layer's z-order to be specified in terms of an integer.
Layers with higher numbered values are stacked above those with
lower ones. Only positive Z-INDEX values are allowed. The use of
this attribute cannot be combined with the use of the ABOVE or
ABOVE specifies the layer immediately on top of a
newly created layer in the stacking order; that is, the new layer
is created just below the layer specified by layername. The use of
this attribute cannot be combined with the use of the BELOW or Z-INDEX
BELOW identifies the layer immediately beneath
the newly created layer in the stacking order; that is, the new
layer is created just above the layer specified by layername. The
named layer must already exist. The use of this attribute cannot
be combined with the use of the ABOVE or Z-INDEX attributes.
WIDTH specifies the width of the layer's content.
It controls the right margin for wrapping purposes. The value can
be expressed as an integer pixel value or as a percentage of the
width of the containing layer.
HEIGHT specifies the height of the layer's
clipping region and serves as the reference for setting the
relative height of children layers. The value can be expressed as
an integer pixel value or as a percentage of the height of the
containing layer (or of the window for a top-level layer).
CLIP specifies the clipping rectangle (viewable
area) of the layer, which can be less than the width and height of
the content of the layer. The value is a set of four numbers. Each
of the four values represents numbers of pixels.
VISIBILITY specifies whether the layer is visible
or not. A value of SHOW shows the layer. A value of HIDDEN hides
the layer. A value of INHERIT causes the layer to
have the same visiblity as its parent layer.
BGCOLOR specifies the background color of the
BACKGROUND specifies an image to use as the
OnMouseOver & OnMouseOut specify which
JacaScript code is executed when the mouse cursor enters (OnMouseOver)
or leaves (OnMouseOut) the layer.
code is executed when the layer gets (OnFocus) or loses (OnBlur)
executed when the layer is loaded.