Toolbars disappear like programs wants to expand to full screen?

I've recently been playing Market Street and Frontierville on Facebook. When playing the game you have the option of making the game screen your full window size. Recently there were updates added to my computer by Microsoft. Now when I'm logged into Internet Explore my windows seem to want to expand to full screen and with that my toolbars completely disappear and reappear when I scroll over them..but in the background I can see information from the page I was just on. Help please-=