Hi,
I do not believe you will find an editor that supports auto resize in viewing page. For what you want to do, you have to use a separate viewing page that shows your HTML directly without using the editor at all.
As to resizing the editor to fit the page, the Editor does not automatically resizes itself. You will have to call this function to resize the editor:
http://www.essentialobjects.com/doc/1/jsdoc.public.control.setsize.aspxFor example, you can get the full size of your page and then call this function to resize the editor to fit the page.
Thanks!