I was upgraded to Yosemite when my imac was fixed, and ever since then things seem to be changing without my input. FIrst it was the dock disappearing, then the brightness changed. Both of those I got help with from this forum so thank you !
Now the tool bar is disappearing. All I have at the top of the page is the web address for the site I am on. There are no options for bookmarks, history, etc. I can pull down the tool bar but it only stays on momentarily and then goes back up and disappears once I take the mouse off of it. It wasn't like this earlier today but it is now and I have done nothing to change it. I tried looking under the system info for the mac but couldn't find a way to fix it. Does anyone have any suggestions? Thanks once again!

Abbey