Safari not working with Yosemite

What happens when you attempt to use Safari?

The typing line, for making an entry into Safari just keeps running, without even typing. Same for Firefox. In addition, thepage drops to the bottom and you cannot get to top again.

Try a Safari reset.

Safari/Preferences/Advanced - enable the Develop menu, then go there and Empty Caches. Quit/reopen Safari and test. Then try Safari/History/Show History and delete all history items. Quit/reopen Safari and test. You can also try try Safari/Clear History and Web Site Data. The down side is it clears all cookies.Doing this may cause some sites to no longer recognize your computer as one that has visited the web site.