Disable right click doesn't work to protect your content.
Most of the JavaScritpt applets work on some browsers, but nothing works on all of them as far as I am aware.
Disable right click and pretty much all other methods of 'protecting' web page content simply don't work.
It doesn't stop you clicking on "View >> Source" in Internet Explorer, and all other browsers have similar code view options.
It also doesn't stop your visitors from simply saving your web page to their own computer and then rob any file(s) they may like from the saved document.
My own opinion is this : don't waste your time.
If you publish it online there are ways of getting at it - content protection is largely a myth.
Anything you publish on a blog is intended for public display - that's the whole point to blogging in the first place. If it's that important to you, don't publish it.
Even if one of us helps you get the script working it won't deter anyone who is remotely serious about swiping your content, so I'd suggest you save yourself the headaches and don't bother with it.