Shorter URLs in comments

hi guys
is there a plugin or a way to have wordpress automatically shortern the URLs people post in my comments?
e.g. https://www.thisisalongurl.com/thisisreallylong/isntit/blahblah/

becomes
https://www.thisisalongurl.com/…ah/

but still points to the original URL?

most of hte URLS are legitimit for discussion but IE6 breaks my sidebar when the URL is too long, works fine in IE7 & FireFox but 69% of my users are still on IE6 and its hard to keep manually editing URLs