Here are some of the choices available to you when you use an iframe.

align choices are: left, center, right
frameborder = 0 or 1
height Number of pixels or percent
id = Alphanumeric, no spaces
longdesc URL of Web page with detailed description of the contents of the inline frame
marginheight Number of pixels
marginwidth Number of pixels
name Text name, beginning with a letter, no spaces
scrolling = yes, no, or auto (default)
src Valid file name of a Web page document (required)
title Text phrase that describes the inline frame recommended by the W3C to improve
width Number of pixels or percent