My mailbox looks different after a java script error

[buffymad]

I use BT Yahoo for my internet connection. I was on a website (can't remember which one) and an error message came up saying there had been a script error on the page (or something like that) and did I want to continue running scripts on this page. Cant remember if I said yes or not! Anyhow, all working fine since then apart from my mail page looks totally different now - in that its all squeezed up together rather than spaced out as usual and in a different typeface/font - and I don't like it! Its obviously something to do with the error that came up. Sure that this has happened before and I managed to get an answer from someone as to how to fix it but I didnt keep the details ... Have tried asking technical help (via email - thought it might be easier) but they've tried answering a question I havent asked - and nothing to do with the problem I told them about!! Has this happened to anyone else before and does anyone have any ideas how to get it back to normal? For any BT Yahoo users out there, I was on classic mail as far as I know and I've tried converting to the new mail and then going back to the classic mail - but its still looking "strange". Not computer minded so dont know where to start!