_No, and sort of, yes. No, in the sense that the site is built online, using WebsiteTonight templates and their server-side program(s). The "yes" part is not much, but you can copy any special html you have added,  write down the color (hex) numbers of your text, and use this info to help speed your rebuild elsewhere . . ..

_Images: you can go to your site online and pull off the images you've added to the site, either from the page itself, or your online photo filer. They won't have the same name as when you put them up, but they'll be what's on your site and can be stored in useful folders and used again for another site. Note: Header images that you've replaced will not pull off the website. A screenshot will take care of that. You can crop the shot in any photo editing program.
Files: download any pdfs or other attached files directly from your site.
Text: to save your text, copy and paste the text from each page into a word processing document. If you love the colors, copy down the hex numbers, or take screenshots and use a digital color meter (in your Applications or Utilities folder on a Mac and probably an equivalent program downloadable, free, elsewhere for PCs) to determine the hex number.
The look and organization: if you're really in love with the present site, take screenshots of your pages to remind you how your site is arranged, for future reference.