a#home { background-image:url(/linguistics/images/button_home.png); height: 30px; width:150px; display:block; }
a#home span { display:none; }
a#home:hover { background-image:url(/linguistics/images/button_home_rollover.png) ; } 

a#prodstud { background-image:url(/linguistics/images/button_prodstud.png); height: 30px; width:150px; display:block; }
a#prodstud span { display:none; }
a#prodstud:hover { background-image:url(/linguistics/images/button_prodstud_rollover.png) ; } 

a#currstud { background-image:url(/linguistics/images/button_currstud.png); height: 30px; width:150px; display:block; }
a#currstud span { display:none; }
a#currstud:hover { background-image:url(/linguistics/images/button_currstud_rollover.png) ; } 

a#faculty { background-image:url(/linguistics/images/button_faculty.png); height: 30px; width:150px; display:block; }
a#faculty span { display:none; }
a#faculty:hover { background-image:url(/linguistics/images/button_faculty_rollover.png) ; } 

a#alumni { background-image:url(/linguistics/images/button_alumni.png); height: 30px; width:150px; display:block; }
a#alumni span { display:none; }
a#alumni:hover { background-image:url(/linguistics/images/button_alumni_rollover.png) ; } 

a#donors { background-image:url(/linguistics/images/button_donors1.png); height: 30px; width:150px; display:block; }
a#donors span { display:none; }
a#donors:hover { background-image:url(/linguistics/images/button_donors_rollover1.png) ; }