userscript support throd

instead of registering on us.o just to make one post, you can use this thread. questions, comments, feature requests, patches are all fine.

I'll provide support for everything listed at http://userscripts.org/users/64431/scripts.

Uncaught exception: Error: WRONG_ARGUMENTS_ERR
Error thrown at line 1013, column 2 in x(xpath, root) in .user.js.js:
    return document.evaluate(xpath, root, null, XPathResult.ANY_UNORDERED_NODE_TYPE, null).singleNodeValue;

called from line 108, column 0 in <anonymous function>() in .user.js.js:

    const form = x('./form');
called from line 44, column 0 in .user.js.js:
    (function() {// <-- Opera wrapper

I'm using Opera 10.5. Not sure what I'm doing wrong.