var idleTime = 0;
window.onload = getStatus();

function setStatus(content) {
	document.getElementById("msisdn-status").innerHTML = content;
}

function getStatus() {
	if(idleTime < 900000) {
		setTimeout('getStatus();',4000); //executes the next data query in 4 seconds
		idleTime = (idleTime + 4000);
	}
	x_getMsisdnStatus('', setStatus);
}