Chrome problem

I recently switched from Firefox to Chrome. The problem is that the javascript on the new post/new page screens doesn’t run. So I click the plus, and it does nothing. I looked in my wp-admin directory, and saw no js file for, say, the trackbacks box. I’d like to change the code so that all of the “boxes” are by default open, instead of closed. Is this possible, and if so, how do I do it?

Thanks.