var currentPulse;
function PulseUser() {
	currentPulse = new Ajax.Request(
		'/ssjs_pulse.ashx',
		{
			method:'GET',
			onFailure:function(xr) {
				window.setTimeout(PulseUser, 5000);
			},
			onSuccess:function(xr, json) {
				window.setTimeout(PulseUser, 5000);
			}
		}
	);
}

//run PulseUser on window.load
Event.observe(
	window, 
	'load', 
	PulseUser, 
	false
);