font-family:Arial,Helmet,Freesans,sans-serif;
font-family:’Arial Narrow’,’Nimbus Sans L’,sans-serif;
font-family:’Bookman Old Style’,Bookman,’URW Bookman L’,serif;
font-family:’Century Gothic’,Futura,’URW Gothic L’,sans-serif;
font-family:’Comic Sans MS’,cursive;
font-family:’Courier New’,Courier,Freemono,’Nimbus Mono L’,monospace;
font-family:Constantina,Georgia,’Nimbus Roman No9 L’,serif;
font-family:Consolas,’Lucida Console’,’Bitstream VeraSans Mono’,’DejaVu Sans Mono’,monospace;
font-family:’Lucida Sans Unicode’,’Lucida Grande’,’Lucida Sans’,’DejaVu Sans Condensed’,sans-serif;
font-family:Cambria,’Palatino Linotype’,’Book Antiqua’,’URW Palladio L’,serif;
font-family:symbol,’Standard Symbols L’;
font-family:Cambria,’Times New Roman’,’Nimbus Roman No9 L’,’Freeserif’,Times,serif;
font-family:Verdana,Geneva,’Bitstream Vera Sans’,’DejaVu Sans’,sans-serif;

These are copied from:
http://kv5r.com/articles/dev/font-family.asp