Userscript to fix Etherscan amount representation

etherscan_amount_fix.js

// ==UserScript==
// @name         Etherscan Number fix
// @namespace    http://etherisc.com
// @version      0.1
// @description  Fix representation of amounts in etherscan
// @author       Christoph Mussenbrock
// @match        https://etherscan.io/token/*
// @grant        none
// @license      https://unlicense.org/
// ==/UserScript==

//
// To run this script, install Tampermonkey and install this script as a userscript.
// Instructions: https://www.tampermonkey.net/
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

(function() {
    'use strict';

    const decimals = 4;

    function fixIt(item) {
        if (item.nodeName === 'TD') {
            const newTd = document.createElement('td');
            newTd.style.textAlign = 'right';
            newTd.innerHTML = (Math.round(Number(item.innerHTML.replace(/,/g, '')*10**decimals))/10**decimals)
                .toLocaleString(undefined, {minimumFractionDigits: decimals});
            return newTd;
        }
        return item;
    }

    let rows;
    try {
        rows = document.querySelector('#maindiv').childNodes[3].childNodes[1].childNodes[3].childNodes;
    } catch (e) {
        return;
    }

    rows.forEach(item => {
        if (item.nodeName === 'TR') {
            item.childNodes[7].replaceWith(fixIt(item.childNodes[7]));
        }
    });

})();