// ==UserScript==
// @name          rziz.net captcha
// @description   After you click "Slow download" button the script solves the numeric captcha, waits for the countdown to finish, clicks the download button
// @include       http://www.rziz.net/*/*.html
// @version       1.0
// @author        wOxxOm
// @namespace     wOxxOm.scripts
// @license       MIT License
// @grant         none
// @run-at        document-start
// @downloadURL none
// ==/UserScript==

document.addEventListener('DOMContentLoaded', function() {
  var x = document.evaluate('//form//div/span[contains("0123456789",.)]', document,
                            null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
  var btn = document.getElementById('btn_download');
  if (x && btn) {
    var nodes = [];
	for (i = 0; i < x.snapshotLength; i++)
		nodes.push(x.snapshotItem(i));
    var nodes = nodes.sort(function(a,b){ return parseInt(a.style.paddingLeft) - parseInt(b.style.paddingLeft) });
    document.forms.F1.code.value = nodes.map(function(n){ return n.textContent }).join('');

    new MutationObserver(function(mutations) {
      if (!btn.disabled)
        document.forms.F1.submit();
    }).observe(btn, {attributes:true, attributesFilter:['disabled']});
  }
});