Smokeping has SmokeTrace http://oss.oetiker.ch/smokeping/
New in Version 2.4 (The SmokeTrace edition) SmokeTrace: An Ajax Traceroute tool. Try the demo. SmokeTrace is written in javascript, using the qooxdoo framework, which is responsible for all the cross browser glory. This may be what you are looking for. Christian Liendo New York Times Digital
