Javascript Blogger scramble letters in title

I have a blogger blog, and I would like the letters in the title of the blog to be scrambled every time the page is refreshed. If the title ot my blog was 'Cookies', I would want the header to show 'Ckooies' one time, and 'Ciekoos' the next for example, in a random fashion.

I'm currently looking at these tags, assuming this is where I'll have to work the magic:

<title><data:blog.pageTitle/></title> 
<b:else/>
<title><data:blog.pageName/> ~ <data:blog.title/></title>