I have lost Google search at top of Safari.

for some unknown reason i have lost the google search facility which is normally in the top right hand corner at top-anyone know how i can get it back? also have lost the facility to save any page so as it issaved and also lost facility to reload a page-anyone know how i can get these facilitys back as can not save any pages/sites-or reknew page.I allready have a lot of saved pages which show up when click in top right hand top corner.I also recently loaded/got firefox ? web set up-maybe that has done something to my safari set up ?Anyone know how i can get these facilities back ?
thanks
rick/ack