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<!-- add Javascript in html head -->
<script>
    var reloading;
    var refresh_time = 30000;
    
    function checkReloading() {
        if (window.location.hash=="#autoreload") {
            reloading=setTimeout("window.location.reload();", refresh_time);
            document.getElementById("reloadCB").checked=true;
        }
    }
    
    function toggleAutoRefresh(cb) {
        if (cb.checked) {
            window.location.replace("#autoreload");
            reloading=setTimeout("window.location.reload();", refresh_time);
        } else {
            window.location.replace("#");
            clearTimeout(reloading);
        }
    }
    
    window.onload=checkReloading;
</script>

<!-- add input checkbox in html body -->
<span><input type="checkbox" onclick="toggleAutoRefresh(this);" id="reloadCB"> Auto Refresh</span>