OS 10.5 - I fat fingered something!

Greetings
I'm relatively new to Imac. My friend finally talked me into getting one this past summer and I've been very happy with it. Until now. Not it's fault, mine.

Here's what happened. I was on EBAY trying to revise an auction and while in the text box I inadvertently clicked the mouse and immediately the boxes to change colors and fonts disappeared and I can't get them back. Also it seems as though the pages on EBAY are not loading completely.

I've emptied cache and allowed cookies and just about everything I can think of to do all to no avail.

I looked at the error log and have a lot of errors that have to do with EBAY pages for example: Warning:"Error in parsing value for the property "font" declaration dropped"

Does anyone have an idea on how I might be able to undo whatever I did?

Thanks, Jeff