<html> <head> <script type="text/javascript" src="js/jquery-1.3.2.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("b").mouseover(function () { $(this).css({'background-color' : 'yellow', 'font-weight' : 'bolder'}); }); }); </script> </head> <body> <body> <b>Hello</b> </body> </html>