Its possible to enable the option 'Hyperlink' in Force.com IDE?. For example to go to method implementation on mouse hover?
The Force.com IDE does not currently support many of the features in Eclipse that you can use for other languages (e.g. Java), including go-to-definition, source formatting, and more. It's possible that it's on the road map, so you might want to follow the github project for the IDE.
In the meantime, if you want it now, you could always fork the project, hack it in yourself, and then use that personal version. If you did, I'm sure the community would appreciate it if you put in a merge request.
Alternatively, you could use a different IDE. I personally use Cloud9, which is beta, but still incredibly powerful, and does include a go-to-definition feature (note: I'm not affiliated with Cloud9, I just really like their product). You may also find similar features in other IDEs, but I don't have any experience with many other IDEs, so I can't say for sure.