Gelbooru Revamped

This adds a couple of changes to the layout and behaviour of the site

// ==UserScript==
// @name       Gelbooru Revamped
// @namespace  westerhold78
// @version    0.9.0
// @description  This adds a couple of changes to the layout and behaviour of the site
// @include     *://gelbooru.com/*
// @include     *gelbooru.com/*
// @include     *://www.gelbooru.com/*
// @require     https://code.jquery.com/jquery-latest.js
// @icon        data:image/png;base64,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
// @copyright  2017, westerhold78
// @grant    GM_addStyle
// @grant    GM_xmlhttpRequest
// ==/UserScript==

var style = [];
var newTabForDetailPage = true;
var zoomScale = 2;
var imageTypes = ['.jpg', '.png','.jpeg','.gif']; 

function loadImage(image, url, extension = 0) {
    var downloadingImage = new Image();
    downloadingImage.onload = function(){
        $(image).attr('src', this.src);   
    }
    downloadingImage.onerror = function() {
        var newExtension = ++extension;
        if(newExtension < imageTypes.length){
            loadImage(image, url, newExtension);
        }
    }
    downloadingImage.src = url.substring(0, url.lastIndexOf('.')) + imageTypes[extension];
}

function urlParam(name){
    var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(window.location.href);
    if (results === null){
       return null;
    }
    else{
       return results[1] || 0;
    }
};

(function() {
    'use strict';

    if(urlParam('s') == 'view') {
        var image = $('#image')
        var url = $(image).attr('src');
        if(url.includes('samples/')) {
            url = url.replace('samples', 'images')
            .replace('sample_', '');
            loadImage(image, url);
        }
        window.scrollTo({ top: 200, behavior: 'smooth' });
    }

    //Replace thumbnails
    $('.thumbnail-preview img.preview').hover(function(event) {
        var image = $(event.target);
        
        // remove tooltip
        $(image).attr('title','');
        
        //preserve image dimensions
        $(image).css('height', $(image).height());

        //replace url
        var url = $(image).attr('src').replace(/^https:\/\/gelbooru.com/, "https://img2.gelbooru.com")
        .replace('thumbnails', 'images')
        .replace('thumbnail_', '');
        loadImage(image, url);

    }, function() {
        clearTimeout(timerObj);
    });

    // Open image in new tab
    $('#image').click(function() {
        window.open($(this)[0].src, '_self');
    });

    // Open detail page in new tab
    if(newTabForDetailPage) {
        $('.thumbnail-preview a').on('click', function(e){
            e.preventDefault();
            var url = $(this).attr('href');
            window.open(url, '_blank');
        });
    }
})();

style.push(
    `.thumbnail-preview:hover {transform: scale(${zoomScale}); -moz-transform: scale(${zoomScale}); -webkit-transform: scale(${zoomScale});}`,
    `img#image { cursor: pointer; width: unset !important; max-width: 100%; max-height: 90vh; }`

);

GM_addStyle(style.join("\n"));