I very often want to make a google scholar search using exactly the same search terms that i just had in google. For that i have used the Scholarfy bookmarklet (highly recommended). I have updated it to take the search string from the document title instead.
This has the advantage that it will work on more sites. E.g. if you click it from this page then it will make a sensible google scholar search.
javascript:location = 'http://scholar.google.com/scholar?q='+escape(document.title.replace(/\s-\s.*$/g,""));
you can add a bookmark to the above url if you want it. It should work in all browsers.
So shortly: Simply replace your bookmark to google scholar with the bookmarklet above.