Differences Between HTML and XHTML
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Tips and Notes
Tip: To deal with browsers that do not understand iframes, place the text you want between the opening _ tag and the closing tag.
Optional Attributes
DTD indicates in which HTML 4.01/XHTML 1.0 DTD the attribute is allowed. S=Strict, T=Transitional, and F=Frameset.
Attribute Value Description DTD
align left
right
top
middle
bottom Deprecated. Use styles instead.
Specifies the alignment of an iframe according to surrounding elements TF
frameborder 1
0 Specifies whether or not to display a border around an iframe TF
height pixels
% Specifies the height of an iframe TF
longdesc URL Specifies a page that contains a long description of the content of an iframe TF
marginheight pixels Specifies the top and bottom margins of an iframe TF
marginwidth pixels Specifies the left and right margins of an iframe TF
name name Specifies the name of an iframe TF
scrolling yes
no
auto Specifies whether or not to display scrollbars in an iframe TF
src URL Specifies the URL of the document to show in an iframe TF
width pixels
% Specifies the width of an iframe TF
Standard Attributes
The _ tag supports the following standard attributes:
Attribute Value Description DTD
class classname Specifies a classname for an element TF
id id Specifies a unique id for an element TF
style style_definition Specifies an inline style for an element TF
title text Specifies extra information about an element TF