menu points to external site in iframe?

Probably this post will be of some use for you:

http://www.asprunner.com/forums/topic/15972-inserting-a-wrapping-page-just-like-joomla/

I have read this forum before. In the visual editor, I click 'menu page' and change to html mode. I find the menu variable "<!-- MainMenuBegin -->{$mainmenu}<!-- MainMenuEnd -->". How can I add the <iframe> tag ?
Pls advice which html or php page to modify for menu?

You cannot add iframe tag to the menu. You can insert iframe into the target page, one that menu link points to.

I haven't used it for awhile but I think this is the code
code for iframe

<IFRAME style="POSITION: absolute; WIDTH: 850px; HEIGHT: 950px" height=950

marginHeight=0 src="http://www.yoursite.com/"; frameBorder=0

width=950 name=body1 marginWidth=0></IFRAME>
what would be neat is to have a menu item point to a highslide js