JSCONSOLE alert

We have a fortiwifi 80CM. We have configured it to alert us if there are any login events. Most of the alerts we get will indicate an IP address from which the Admin logged in. Occassionally, however, we get the message " Administrator admin logged in successfully from jsconsole." What is jsconsole? I might have expected this to be a login thru a serial management port, but we never access the fortigate in that manner.