Setting up an Iframe to pull in a webpage inside a webpage

[computerkitten]

I setup an Iframe on a page to pull in a website into this particular page. Yes that is what the client wants. I am just wondering about Iframes, I just used an Iframe Generator.. but noticed that I have to hard set the height for this Iframe to get all of this webpage to show up inside THIS webpage. Now I would rather not do that as of course in the future if this website changes its height, then everything will be messed up on this end. I tried height="100%" and that didn't work either.

Ideas?

Here is the code:

<p><iframe src="http://www.americanolean.com" name="frame1" scrolling="no" frameborder="no" align="center" height = "900px" width = "960px"><br />
</iframe></p>


Website is here:

http://www.echotestingsite.com/cherr...american-olean

Thanks!