<script>
(function () {
function httpStatus(url, callback) {
var http = new XMLHttpRequest();
http.open('HEAD', url);
http.onreadystatechange = function () {
if (this.readyState == this.DONE) {
callback(this.status);
}
};
http.send();
}
function reloadPage() {
setTimeout('location.reload(true);', 1);
}
function reloadIfSiteUp() {
httpStatus(location.href, function (sstatus) {
if (sstatus == 503) {
setTimeout(reloadIfSiteUp, <?php echo $interval * 1000 ?>)
} else {
reloadPage();
}
})
}
reloadIfSiteUp();
})();
</script>
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