Something is very strange. The yellow minimize button on the Safari is greyed out, the minimize option from the window button is greyed out, and I get an error sound everytime I press Apple key + M to minimize the Safari window. I did not tweak anything in my preferences, and now that I'm trying to tweak the minimize option back into existence, I can't find it anywhere. The Safari Help is no help at all. The minimize option of all other applications are working just fine. It's just Safari that is being weird. How can I fix this? Thanks.