lur-toggle").addEventListener("change", function() {
            blurEnabled = this.checked;
        });

        document.getElementById("slowmo-toggle").addEventListener("change", function() {
            slowMoReset = this.checked ? 6 : 1;
        });

        utils.addTimerElement();
        utils.instrumentAnimationFrame();

        if (!testExtension("EXT_color_buffer_float")) {
            document.body.innerHTML = "This example requires extension <b>EXT_color_buffer_float</b> which is not supported 