Accessing <script> src CGI params in Javascript.js

(function() {

  window.__SCRIPT ? window.__SCRIPT.index++ : window.__SCRIPT = { index : 0 };
      
  var scriptElement = null;

  var scriptParams = (function() {
    var scripts = document.getElementsByTagName("script");
    var __SCRIPTS = [];
    for (var i = 0; (i < scripts.length); i++) {
      if (scripts[i].src.match("__JSCGI=1")) {
        __SCRIPTS.push(scripts[i]);
      } 
    }
    scriptElement = __SCRIPTS[window.__SCRIPT.index];
    var split_src = scriptElement.src.split("?");
    split_src.shift();
    var raw_params = split_src.join("?").split("&");
    var params = {};
    for (var i = 0; (i < raw_params.length); i++) {
      var kv = raw_params[i].split("=");
      params[unescape(kv[0])] = unescape(kv[1]); 
    }
    return params; 
  })();

})();