Detect Connection speed with Wicket or something similar

[Brown, Berlin [GCG-PFS]]

For our wicket applications, we want to detect the browser connection
speed, do you know of a library or approach for detecting the browser
speed.
 
There is a thing in wicket called AjaxTimerBehavior that I could use but
it is a little flaky and not built for the purpose of detetching browser
speed.
 
Do you have any ideas how to check this?
 
I thought about using jQuery also, but wouldn't know how?