Shorten URL and then Share on Facebook

[Defkalion]

I have been searching all over to find something like this, but failed.

I need to have a "share on facebook button" but it needs to shorten the URL of the page first and then submit it to FB, because I have serious problems trying to share my pages on fb, because of greek characters on the URL.

If I go manually to shorten one of my urls and then use the bit.ly version to post it on FB, it works fine.

Is there any automatic way to do this? Any ideas?