$(function() { var checkbox = $(\'#wants_to_drive\'); if(checkbox.is(\':checked\')) $(\'#driving_license\').show(); else $(\'#driving_license\').hide(); checkbox.click( function() { if($(\'#wants_to_drive\').is(\':checked\')) $(\'#driving_license\').show(); else $(\'#driving_license\').hide(); } ); }); ' ]); }