iframe básico (html)

Iframe:
<iframe leftmargin=5 topmargin=5 marginWidth=0 marginHeight=0 src="pagina_que_vai_abrir.htm" frameBorder=1 width=100% height=100% scrolling=yes name="nome_da_frame"></iframe>
Link para Iframe:
<a href="http://www.pauloadriano.com" target="nome_da_frame">link para abrir na iframe</a>

Optional Attributes

DTD indicates in which 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