Java and javascript have almost nothing to do with each other. (There was a very distant common ancestor.)
I do not think installing Java is going to help with anything needing javascript.
The MS version of javascript is jscript. You can get it here http://www.microsoft.com/downloads/d...B-95A22B832CAA
Having said all that, I think the "Waiting for javascript" line in the status bar has to do with the coding on that page. See, for example, http://www.olat.org:8080/browse/OLAT...nager.js?r=1.1 lines 466 and 469.

If you can see and use the page(s) OK I would not worry about it.