Formatting Search outside of sidebar

I’m trying to add the search box to the header of my page, but am having a hell of a time getting it to format properly. You can see the page here:

https://www.enviromedia.com/beta/index.php?s=WordPress

I would like for the search box to appear to the left of the search button and not to the left of the rest of the navigation. Any help would be greatly appreciated.

Thanks in advance,
Lisa