I'll have to ask my daughter. I don't know how much you get to edit, when you change a layout. If you can get into raw html, you probably could, but I don't have a myspace page, so I have no clue.
I asked Sarah and signed into her account to check. You can't use javascript on Myspace pages, so you can't use the no-right-click thingie, because it's a javascript, unfortunately.
I copied this from her myspace page:
You may enter HTML/DHTML or CSS in any text field.
Javascript is not allowed.
Do not use HTML/CSS to cover MySpace advertisements.
You probably can tell the image toolbar to now show up, though.
<META HTTP-EQUIV="imagetoolbar" CONTENT="no">
It just makes it a little harder for people to save stuff. It goes in the <head> stuff at the top of the page.
Here is an example of it: