function callInProgress (xmlhttp) {
	switch (xmlhttp.readyState) {
	case 1: case 2: case 3:
		return true;
		break;
	// Case 4 and 0
	default:
		return false;
		break;
	}
}

function showFailureMessage() {
	//alert('uh oh, it looks like the network is down. Try again shortly');
}

// Register global responders that will occur on all AJAX requests
Ajax.Responders.register({
	onCreate: function(request) {
		request['timeoutId'] = window.setTimeout(
			function() {
				// If we have hit the timeout and the AJAX request is active, abort it and let the user know
				if (callInProgress(request.transport)) {
					request.transport.abort();
					showFailureMessage();
					// Run the onFailure method if we set one up when creating the AJAX object
					if (request.options['onFailure']) {
						request.options['onFailure'](request.transport, request.json);
					}
				}
			},
		5000 // Five seconds
		);
	},
	onComplete: function(request) {
		// Clear the timeout, the request completed ok
		window.clearTimeout(request['timeoutId']);
	}
});

function deCalc(sProdCode,iDays) {
	if (iDays==0) {
		$('de-'+sProdCode).innerHTML = 'unknown';
	} else {
		new Ajax.Updater('de-'+sProdCode,'/deliveryestimate.php?code='+sProdCode+'&days='+iDays);
		//$('de-'+sProdCode).innerHTML = 'test';		
	}
}