tampermonkey script for freebitco.in seedchanger by snowy

// ==UserScript==
// @name         seeds by snowy
// @namespace    http://tampermonkey.net/
// @version      3.14
// @description  snowy atomic seedchanger!
// @author       snowy
// @match        https://freebitco.in/*
// @require      http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// ==/UserScript==
var myseed;

function getR(minz, maxz) {
  minz = Math.ceil(minz);
  maxz = Math.floor(maxz);
  return Math.floor(Math.random() * (maxz - minz + 1)) + minz;
}
function makeid(length) {
    var result = '';
    var cha = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var chaLength = cha.length;
    for ( var ion = 0; ion < length; ion++ ){
      result += cha.charAt(Math.floor(Math.random() *
 chaLength));
   }
   return result;
}

function multiply(){
    var xol = getR(1,3);
if (xol==1) {
myseed = (makeid(5));
}
if (xol==2) {
myseed = (makeid(7));
}
if (xol==3) {
myseed = (makeid(9));
}
document.getElementById('next_client_seed').value = myseed;}
    setInterval(() => multiply(), 1000);