 40*40, 50*50, 66*66, 100*100, 200*200];
    function getURL(item) {
        return destUrl + '&tao1=' + item.tao1 + '&tao2=' + item.tao2;
    }
    function setImage(index) {
        const image = document.getElementById('image');
        const item = taoCombinations[index];
        image.src = getURL(item);
        // Use monotonic sizes to get all the images!
        image.width = 200 / (7 - index);
    }
    let observedCount = 0;
    let beforeLoad = performance.now();
    new PerformanceObserver(t.ste