- Improve it further. Make it significantly better. 
- Makesure that script can be saved as a bookmarklet in your browser and executed on any webpage or website to extract and display all images seamlessly, no matter image type, class, format, etc.
- Make it 15 to 20 times better than before in all posible aspects and areas as possible.
- improve ui and ux too.
- modern and visually appealing ui.
- don't use framework.
- fix all of the possible edge cases, errors, bottlenecks, loopholes, leaks, etc..
- use only free and lightweight resources.
- make sure I can use it as bookmarklet in my browser and execute on any webpage to extract all of the images from the webpage and display all of images seamlessly..
- optimise it fully but only for mobile browser in any circumstances possible.
- always consider all of the possible consequences of your modification before modifying.
- make it smooth and fast as possible.
- Send the fully working full improved code.
think step by step.
--
(function(){
    try {
        // Enhanced Configuration
        const CONFIG = {
            MAX_IMAGES: 100,                    // Increased maximum number of images
            CORS_PROXIES: [                     // Multiple fallback proxies
                'https://corsproxy.io/?',
                'https://api.allorigins.win/raw?url=',
                'https://api.codetabs.com/v1/proxy?quest='
            ],
            ZOOM: {
                MIN: 0.5,                       // Minimum zoom level
                MAX: 10,                        // Maximum zoom level
                STEP: 0.1                       // Zoom step increment
            },
            SLIDESHOW: {
                MIN_INTERVAL: 0.5,              // Minimum slideshow interval in seconds
                MAX_INTERVAL: 60,               // Maximum slideshow interval
                DEFAULT_INTERVAL: 3             // Default interval
            },
            PRELOAD: {
                ADJACENT: 2,                    // Number of adjacent images to preload
                CHUNK_SIZE: 5                   // Number of images to load in each chunk
            },
            ANIMATION: {
                DURATION: 300,                  // Animation duration in milliseconds
                EASING: 'cubic-bezier(0.4, 0, 0.2, 1)' // Smooth easing function
            }
        };

        // Prevent multiple instances
        if (window.ultimateHighslideViewer) {
            window.ultimateHighslideViewer.focus();
            return;
        }

        // Enhanced image source gathering
        function gatherImageSources() {
            const sources = new Set();
            
            // Query multiple potential image selectors
            const selectors = [
                'img.highslide-image',
                'img[data-highslide]',
                'a.highslide img',
                'img[data-large-src]',
                'img[data-full-src]'
            ];

            selectors.forEach(selector => {
                document.querySelectorAll(selector).forEach(img => {
                    // Try multiple possible source attributes
                    ['src', 'data-src', 'data-large-src', 'data-full-src', 'href'].forEach(attr => {
                        const src = img.getAttribute(attr) || img.closest('a')?.href;
                        if (src) sources.add(sanitizeURL(src));
                    });
                });
            });

            return Array.from(sources).slice(0, CONFIG.MAX_IMAGES);
        }

        // Enhanced URL sanitization with additional security checks
        function sanitizeURL(url) {
            try {
                const sanitized = new URL(url, window.location.href);
                // Ensure URL is either from same origin or uses https
                if (sanitized.protocol !== 'https:' && sanitized.origin !== window.location.origin) {
                    return '';
                }
                return sanitized.href;
            } catch(e) {
                return '';
            }
        }

        // Gather images with enhanced detection
        const images = gatherImageSources();

        if(images.length === 0) {
            alert('No compatible images found on this page.');
            return;
        }

        // Create viewer window with improved features
        const viewer = window.open('', '_blank', 'width=1200,height=800,scrollbars=no,resizable=yes');

        if(!viewer) {
            alert('Popup blocked! Please allow popups for this website to use the image viewer.');
            return;
        }

        window.ultimateHighslideViewer = viewer;

        // Enhanced HTML content with additional features
        const htmlContent = `
        <!DOCTYPE html>
        <html lang="en">
        <head>
            <meta charset="UTF-8">
            <meta name="viewport" content="width=device-width, initial-scale=1.0">
            <title>Enhanced Ultra-Robust Image Viewer</title>
            <style>
                /* Base Styles */
                :root {
                    --primary-color: #2196F3;
                    --secondary-color: #333;
                    --background-color: #000;
                    --text-color: #fff;
                    --overlay-color: rgba(0, 0, 0, 0.75);
                    --transition-duration: 300ms;
                }

                * {
                    margin: 0;
                    padding: 0;
                    box-sizing: border-box;
                }

                body {
                    margin: 0;
                    background-color: var(--background-color);
                    color: var(--text-color);
                    font-family: system-ui, -apple-system, sans-serif;
                    overflow: hidden;
                    position: relative;
                    height: 100vh;
                    display: grid;
                    grid-template-rows: auto 1fr auto;
                }

                /* Enhanced Controls */
                .controls {
                    position: fixed;
                    z-index: 100;
                    padding: 1rem;
                    display: flex;
                    gap: 1rem;
                    background: var(--overlay-color);
                    border-radius: 8px;
                    backdrop-filter: blur(10px);
                    transition: opacity var(--transition-duration);
                }

                .controls-top {
                    top: 1rem;
                    right: 1rem;
                }

                .controls-bottom {
                    bottom: 1rem;
                    left: 50%;
                    transform: translateX(-50%);
                }

                /* Enhanced Buttons */
                .button {
                    background: var(--primary-color);
                    color: var(--text-color);
                    border: none;
                    padding: 0.75rem 1.25rem;
                    border-radius: 6px;
                    cursor: pointer;
                    font-size: 0.9rem;
                    font-weight: 500;
                    transition: all var(--transition-duration);
                    display: flex;
                    align-items: center;
                    gap: 0.5rem;
                }

                .button:hover {
                    background: color-mix(in srgb, var(--primary-color) 80%, white);
                    transform: translateY(-1px);
                }

                .button:active {
                    transform: translateY(0);
                }

                /* Enhanced Image Container */
                .image-container {
                    position: relative;
                    width: 100%;
                    height: 100%;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    overflow: hidden;
                }

                .main-image {
                    max-width: 100%;
                    max-height: 100%;
                    object-fit: contain;
                    transition: transform var(--transition-duration) var(--animation-easing);
                    will-change: transform;
                }

                /* Enhanced Thumbnails */
                .thumbnails {
                    position: fixed;
                    bottom: 5rem;
                    left: 50%;
                    transform: translateX(-50%);
                    display: flex;
                    gap: 0.5rem;
                    padding: 1rem;
                    background: var(--overlay-color);
                    border-radius: 8px;
                    backdrop-filter: blur(10px);
                    max-width: 90vw;
                    overflow-x: auto;
                    scrollbar-width: thin;
                    scrollbar-color: var(--primary-color) transparent;
                }

                .thumbnail {
                    height: 80px;
                    border: 2px solid transparent;
                    border-radius: 4px;
                    transition: all var(--transition-duration);
                    cursor: pointer;
                    opacity: 0.7;
                }

                .thumbnail:hover {
                    opacity: 0.9;
                    transform: translateY(-2px);
                }

                .thumbnail.active {
                    border-color: var(--primary-color);
                    opacity: 1;
                }

                /* Enhanced Loading States */
                .loader {
                    position: absolute;
                    top: 50%;
                    left: 50%;
                    transform: translate(-50%, -50%);
                }

                .loader::after {
                    content: '';
                    display: block;
                    width: 40px;
                    height: 40px;
                    border-radius: 50%;
                    border: 4px solid var(--text-color);
                    border-top-color: var(--primary-color);
                    animation: spin 1s linear infinite;
                }

                @keyframes spin {
                    to { transform: rotate(360deg); }
                }

                /* Enhanced Error States */
                .error {
                    position: absolute;
                    top: 50%;
                    left: 50%;
                    transform: translate(-50%, -50%);
                    background: var(--overlay-color);
                    padding: 2rem;
                    border-radius: 8px;
                    text-align: center;
                    max-width: 80%;
                }

                /* Enhanced Navigation */
                .nav-button {
                    position: fixed;
                    top: 50%;
                    transform: translateY(-50%);
                    background: var(--overlay-color);
                    color: var(--text-color);
                    border: none;
                    width: 48px;
                    height: 48px;
                    border-radius: 50%;
                    cursor: pointer;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    transition: all var(--transition-duration);
                    z-index: 90;
                }

                .nav-button:hover {
                    background: var(--primary-color);
                    transform: translateY(-50%) scale(1.1);
                }

                .nav-prev { left: 1rem; }
                .nav-next { right: 1rem; }

                /* Enhanced Tooltips */
                [data-tooltip] {
                    position: relative;
                }

                [data-tooltip]::before {
                    content: attr(data-tooltip);
                    position: absolute;
                    bottom: 100%;
                    left: 50%;
                    transform: translateX(-50%);
                    padding: 0.5rem;
                    background: var(--overlay-color);
                    border-radius: 4px;
                    font-size: 0.8rem;
                    white-space: nowrap;
                    opacity: 0;
                    pointer-events: none;
                    transition: all var(--transition-duration);
                }

                [data-tooltip]:hover::before {
                    opacity: 1;
                    transform: translateX(-50%) translateY(-0.5rem);
                }

                /* Enhanced Responsive Design */
                @media (max-width: 768px) {
                    .controls {
                        padding: 0.75rem;
                        gap: 0.5rem;
                    }

                    .button {
                        padding: 0.5rem 1rem;
                        font-size: 0.8rem;
                    }

                    .thumbnail {
                        height: 60px;
                    }

                    .nav-button {
                        width: 40px;
                        height: 40px;
                    }
                }

                /* Enhanced Accessibility */
                @media (prefers-reduced-motion: reduce) {
                    * {
                        animation-duration: 0.01ms !important;
                        animation-iteration-count: 1 !important;
                        transition-duration: 0.01ms !important;
                        scroll-behavior: auto !important;
                    }
                }

                .sr-only {
                    position: absolute;
                    width: 1px;
                    height: 1px;
                    padding: 0;
                    margin: -1px;
                    overflow: hidden;
                    clip: rect(0, 0, 0, 0);
                    white-space: nowrap;
                    border: 0;
                }
            </style>
        </head>
        <body>
            <div class="controls controls-top">
                <button class="button" id="proxyToggle" data-tooltip="Toggle CORS Proxy">
                    <span class="proxy-status">Direct</span>
                </button>
                <button class="button" id="downloadBtn" data-tooltip="Download Image">
                    Download
                </button>
                <button class="button" id="fullscreenBtn" data-tooltip="Toggle Fullscreen">
                    Fullscreen
                </button>
            </div>

            <div class="image-container" id="imageContainer">
                <img class="main-image" id="mainImage" alt="Main view" loading="lazy">
                <div class="loader" id="loader"></div>
                <div class="error" id="error" style="display: none">
                    <h3>Failed to load image</h3>
                    <p>Try enabling the proxy or check your connection.</p>
                </div>
            </div>

            <button class="nav-button nav-prev" id="prevBtn" aria-label="Previous image">←</button>
            <button class="nav-button nav-next" id="nextBtn" aria-label="Next image">→</button>

            <div class="controls controls-bottom">
                <button class="button" id="slideshowBtn">Start Slideshow</button>
                <input type="number" id="slideshowInterval" value="3" min="0.5" max="60" step="0.5"
                    style="width: 60px; padding: 0.5rem; border-radius: 4px; border: none;">
                <button class="button" id="resetBtn" data-tooltip="Reset View">Reset</button>
            </div>

            <div class="thumbnails" id="thumbnails"></div>

            <script>
                (function() {
                    // Enhanced State Management
                    const state = {
                        images: ${JSON.stringify(images)},
                        currentIndex: 0,
                        proxyIndex: 0,
                        scale: 1,
                        rotation: 0,
                        translateX: 0,
                        translateY: 0,
                        isMoving: false,
                        loadedImages: new Set(),
                        slideshowInterval: null,
                        gestureStart: { x: 0, y: 0, distance: 0 },
                        imageCache: new Map(),
                        errorCount: new Map(),
                    };

                    // Enhanced Element References
                    const elements = {
                        container: document.getElementById('imageContainer'),
                        image: document.getElementById('mainImage'),
                        loader: document.getElementById('loader'),
                        error: document.getElementById('error'),
                        prevBtn: document.getElementById('prevBtn'),
                        nextBtn: document.getElementById('nextBtn'),
                        proxyBtn: document.getElementById('proxyToggle'),
                        downloadBtn: document.getElementById('downloadBtn'),
                        fullscreenBtn: document.getElementById('fullscreenBtn'),
                        slideshowBtn: document.getElementById('slideshowBtn'),
                        intervalInput: document.getElementById('slideshowInterval'),
                        resetBtn: document.getElementById('resetBtn'),
                        thumbnails: document.getElementById('thumbnails'),
                    };

                    // Enhanced Image Loading System
                    class ImageLoader {
                        constructor() {
                            this.cache = new Map();
                            this.loading = new Map();
                            this.errors = new Map();
                        }

                        async load(url, useProxy = false) {
                            const cacheKey = useProxy ? `proxy-${url}` : url;
                            
                            // Check cache first
                            // Check cache first
                            if (this.cache.has(cacheKey)) {
                                return this.cache.get(cacheKey);
                            }

                            // Handle concurrent loading requests
                            if (this.loading.has(cacheKey)) {
                                return this.loading.get(cacheKey);
                            }

                            const loadPromise = new Promise(async (resolve, reject) => {
                                try {
                                    const finalUrl = useProxy ? 
                                        CONFIG.CORS_PROXIES[state.proxyIndex] + encodeURIComponent(url) : 
                                        url;

                                    const img = new Image();
                                    img.crossOrigin = 'anonymous';

                                    img.onload = () => {
                                        this.cache.set(cacheKey, img);
                                        this.loading.delete(cacheKey);
                                        resolve(img);
                                    };

                                    img.onerror = () => {
                                        this.errors.set(cacheKey, (this.errors.get(cacheKey) || 0) + 1);
                                        this.loading.delete(cacheKey);
                                        reject(new Error(`Failed to load image: ${url}`));
                                    };

                                    img.src = finalUrl;
                                } catch (error) {
                                    this.loading.delete(cacheKey);
                                    reject(error);
                                }
                            });

                            this.loading.set(cacheKey, loadPromise);
                            return loadPromise;
                        }

                        preloadAdjacent(currentIndex) {
                            const indices = [];
                            for (let i = 1; i <= CONFIG.PRELOAD.ADJACENT; i++) {
                                indices.push((currentIndex + i) % state.images.length);
                                indices.push((currentIndex - i + state.images.length) % state.images.length);
                            }

                            indices.forEach(index => {
                                const url = state.images[index];
                                if (!this.cache.has(url)) {
                                    this.load(url, state.proxyIndex > 0).catch(() => {});
                                }
                            });
                        }
                    }

                    const imageLoader = new ImageLoader();

                    // Enhanced Image Display Controller
                    class ImageDisplayController {
                        constructor() {
                            this.bindEvents();
                            this.setupIntersectionObserver();
                        }

                        async showImage(index, transition = true) {
                            if (index < 0 || index >= state.images.length) return;

                            const url = state.images[index];
                            elements.loader.style.display = 'block';
                            elements.error.style.display = 'none';
                            elements.image.style.opacity = transition ? '0' : '1';

                            try {
                                const img = await imageLoader.load(url, state.proxyIndex > 0);
                                
                                if (transition) {
                                    await this.fadeOut(elements.image);
                                }

                                elements.image.src = img.src;
                                state.currentIndex = index;
                                this.updateThumbnails();
                                this.resetView();

                                if (transition) {
                                    await this.fadeIn(elements.image);
                                }

                                imageLoader.preloadAdjacent(index);
                            } catch (error) {
                                this.handleLoadError(url);
                            } finally {
                                elements.loader.style.display = 'none';
                            }
                        }

                        async fadeOut(element) {
                            return new Promise(resolve => {
                                element.style.transition = `opacity ${CONFIG.ANIMATION.DURATION}ms ${CONFIG.ANIMATION.EASING}`;
                                element.style.opacity = '0';
                                setTimeout(resolve, CONFIG.ANIMATION.DURATION);
                            });
                        }

                        async fadeIn(element) {
                            return new Promise(resolve => {
                                element.style.transition = `opacity ${CONFIG.ANIMATION.DURATION}ms ${CONFIG.ANIMATION.EASING}`;
                                element.style.opacity = '1';
                                setTimeout(resolve, CONFIG.ANIMATION.DURATION);
                            });
                        }

                        handleLoadError(url) {
                            const errorCount = imageLoader.errors.get(url) || 0;
                            
                            if (errorCount === 1 && state.proxyIndex === 0) {
                                state.proxyIndex = 1;
                                elements.proxyBtn.querySelector('.proxy-status').textContent = 'Proxy 1';
                                this.showImage(state.currentIndex, false);
                            } else if (state.proxyIndex < CONFIG.CORS_PROXIES.length - 1) {
                                state.proxyIndex++;
                                elements.proxyBtn.querySelector('.proxy-status').textContent = `Proxy ${state.proxyIndex}`;
                                this.showImage(state.currentIndex, false);
                            } else {
                                elements.error.style.display = 'block';
                            }
                        }

                        resetView() {
                            state.scale = 1;
                            state.rotation = 0;
                            state.translateX = 0;
                            state.translateY = 0;
                            this.updateTransform();
                        }

                        updateTransform() {
                            elements.image.style.transform = `
                                translate(${state.translateX}px, ${state.translateY}px)
                                rotate(${state.rotation}deg)
                                scale(${state.scale})
                            `;
                        }

                        updateThumbnails() {
                            const thumbnails = elements.thumbnails.querySelectorAll('.thumbnail');
                            thumbnails.forEach((thumb, index) => {
                                thumb.classList.toggle('active', index === state.currentIndex);
                                if (index === state.currentIndex) {
                                    thumb.scrollIntoView({ behavior: 'smooth', block: 'nearest', inline: 'center' });
                                }
                            });
                        }

                        setupIntersectionObserver() {
                            const options = {
                                root: elements.thumbnails,
                                rootMargin: '20px',
                                threshold: 0.1
                            };

                            const observer = new IntersectionObserver((entries) => {
                                entries.forEach(entry => {
                                    if (entry.isIntersecting) {
                                        const img = entry.target;
                                        if (!img.src && img.dataset.src) {
                                            img.src = img.dataset.src;
                                            observer.unobserve(img);
                                        }
                                    }
                                });
                            }, options);

                            // Observe all thumbnails
                            elements.thumbnails.querySelectorAll('.thumbnail').forEach(thumb => {
                                observer.observe(thumb);
                            });
                        }

                        bindEvents() {
                            // Navigation Controls
                            elements.prevBtn.addEventListener('click', () => {
                                this.showImage((state.currentIndex - 1 + state.images.length) % state.images.length);
                            });

                            elements.nextBtn.addEventListener('click', () => {
                                this.showImage((state.currentIndex + 1) % state.images.length);
                            });

                            // Proxy Toggle
                            elements.proxyBtn.addEventListener('click', () => {
                                state.proxyIndex = (state.proxyIndex + 1) % (CONFIG.CORS_PROXIES.length + 1);
                                elements.proxyBtn.querySelector('.proxy-status').textContent = 
                                    state.proxyIndex === 0 ? 'Direct' : `Proxy ${state.proxyIndex}`;
                                this.showImage(state.currentIndex, false);
                            });

                            // Slideshow Controls
                            elements.slideshowBtn.addEventListener('click', () => {
                                if (state.slideshowInterval) {
                                    clearInterval(state.slideshowInterval);
                                    state.slideshowInterval = null;
                                    elements.slideshowBtn.textContent = 'Start Slideshow';
                                } else {
                                    const interval = Math.max(
                                        CONFIG.SLIDESHOW.MIN_INTERVAL,
                                        Math.min(CONFIG.SLIDESHOW.MAX_INTERVAL,
                                        parseFloat(elements.intervalInput.value))
                                    ) * 1000;

                                    state.slideshowInterval = setInterval(() => {
                                        this.showImage((state.currentIndex + 1) % state.images.length);
                                    }, interval);
                                    elements.slideshowBtn.textContent = 'Stop Slideshow';
                                }
                            });

                            // Fullscreen Toggle
                            elements.fullscreenBtn.addEventListener('click', () => {
                                if (!document.fullscreenElement) {
                                    document.documentElement.requestFullscreen();
                                    elements.fullscreenBtn.textContent = 'Exit Fullscreen';
                                } else {
                                    document.exitFullscreen();
                                    elements.fullscreenBtn.textContent = 'Fullscreen';
                                }
                            });

                            // Download Button
                            elements.downloadBtn.addEventListener('click', () => {
                                const link = document.createElement('a');
                                link.href = elements.image.src;
                                link.download = `image_${state.currentIndex + 1}`;
                                link.click();
                            });

                            // Keyboard Navigation
                            document.addEventListener('keydown', (e) => {
                                switch(e.key) {
                                    case 'ArrowLeft': elements.prevBtn.click(); break;
                                    case 'ArrowRight': elements.nextBtn.click(); break;
                                    case 'Escape': window.close(); break;
                                }
                            });

                            // Touch and Mouse Controls for Pan/Zoom
                            this.setupTouchControls();
                            this.setupMouseControls();
                        }

                        setupTouchControls() {
                            let initialTouchDistance = 0;
                            let initialScale = 1;

                            elements.container.addEventListener('touchstart', (e) => {
                                if (e.touches.length === 2) {
                                    initialTouchDistance = Math.hypot(
                                        e.touches[0].clientX - e.touches[1].clientX,
                                        e.touches[0].clientY - e.touches[1].clientY
                                    );
                                    initialScale = state.scale;
                                    e.preventDefault();
                                }
                            });

                            elements.container.addEventListener('touchmove', (e) => {
                                if (e.touches.length === 2) {
                                    const currentDistance = Math.hypot(
                                        e.touches[0].clientX - e.touches[1].clientX,
                                        e.touches[0].clientY - e.touches[1].clientY
                                    );
                                    
                                    const scaleFactor = currentDistance / initialTouchDistance;
                                    state.scale = Math.min(
                                        Math.max(initialScale * scaleFactor, CONFIG.ZOOM.MIN),
                                        CONFIG.ZOOM.MAX
                                    );
                                    
                                    this.updateTransform();
                                    e.preventDefault();
                                }
                            });
                        }

                        setupMouseControls() {
                            let isDragging = false;
                            let startX, startY;
                            let initialTranslateX, initialTranslateY;

                            elements.container.addEventListener('mousedown', (e) => {
                                if (e.button === 0) {
                                    isDragging = true;
                                    startX = e.clientX;
                                    startY = e.clientY;
                                    initialTranslateX = state.translateX;
                                    initialTranslateY = state.translateY;
                                    elements.container.style.cursor = 'grabbing';
                                }
                            });

                            elements.container.addEventListener('mousemove', (e) => {
                                if (isDragging) {
                                    state.translateX = initialTranslateX + (e.clientX - startX);
                                    state.translateY = initialTranslateY + (e.clientY - startY);
                                    this.updateTransform();
                                }
                            });

                            elements.container.addEventListener('mouseup', () => {
                                isDragging = false;
                                elements.container.style.cursor = 'grab';
                            });

                            elements.container.addEventListener('mouseleave', () => {
                                isDragging = false;
                                elements.container.style.cursor = 'grab';
                            });

                            elements.container.addEventListener('wheel', (e) => {
                                e.preventDefault();
                                const rect = elements.image.getBoundingClientRect();
                                const mouseX = e.clientX - rect.left;
                                const mouseY = e.clientY - rect.top;

                                const scaleFactor = e.deltaY < 0 ? 1.1 : 0.9;
                                const newScale = Math.min(
                                    Math.max(state.scale * scaleFactor, CONFIG.ZOOM.MIN),
                                    CONFIG.ZOOM.MAX
                                );

                                // Zoom towards mouse position
                                if (newScale !== state.scale) {
                                    const scaleRatio = newScale / state.scale;
                                    state.scale = newScale;
                                    state.translateX = mouseX - (mouseX - state.translateX) * scaleRatio;
                                    state.translateY = mouseY - (mouseY - state.translateY) * scaleRatio;
                                    this.updateTransform();
                                }
                            });
                        }
                    }

                    // Initialize the viewer
                    const displayController = new ImageDisplayController();

                    // Create thumbnails
                    state.images.forEach((src, index) => {
                        const thumb = document.createElement('img');
                        thumb.className = 'thumbnail';
                        thumb.dataset.src = src; // For lazy loading
                        thumb.alt = `Thumbnail ${index + 1}`;
                        thumb.addEventListener('click', () => {
                            displayController.showImage(index);
                        });
                        elements.thumbnails.appendChild(thumb);
                    });

                    // Start with first image
                    displayController.showImage(0, false);

                    // Cleanup on window close
                    window.addEventListener('beforeunload', () => {
                        if (state.slideshowInterval) {
                            clearInterval(state.slideshowInterval);
                        }
                        window.ultimateHighslideViewer = null;
                    });
                })();
            </script>
        </body>
        </html>
        `;

        // Write the HTML content to the new window
        viewer.document.open();
        viewer.document.write(htmlContent);
        viewer.document.close();

    } catch (error) {
        console.error('Enhanced Ultra-Robust Image Viewer Error:', error);
        alert('An error occurred while launching the image viewer. Please try again.');
    }
})();