My page is showing a diamond in the place of a accent

My page is showing a diamond in the place of a accent

I´m using primefaces
And trying to change the idiom of my page to portuguese.
But when i load the page, it shows a diamond with a question in the place
of accent...
I´m using primefaces
And this code below is in JavaScript
PrimeFaces.locales['pt'] = {
closeText: 'Fechar',
prevText: 'Anterior',
nextText: 'Próximo',
currentText: 'Começo',
monthNames:
['Janeiro','Fevereiro','Março','Abril','Maio','Junho','Julho','Agosto','Setembro','Outubro','Novembro','Dezembro'],
monthNamesShort: ['Jan','Fev','Mar','Abr','Mai','Jun',
'Jul','Ago','Set','Out','Nov','Dez'],
dayNames:
['Domingo','Segunda','Terça','Quarta','Quinta','Sexta','Sábado'],
dayNamesShort: ['Dom','Seg','Ter','Qua','Qui','Sex','Sáb'],
dayNamesMin: ['D','S','T','Q','Q','S','S'],
weekHeader: 'Semana',
firstDay: 1,
isRTL: false,
showMonthAfterYear: false,
yearSuffix: '',
timeOnlyTitle: 'Só Horas',
timeText: 'Tempo',
hourText: 'Hora',
minuteText: 'Minuto',
secondText: 'Segundo',
currentText: 'Data Atual',
ampm: false,
month: 'Mês',
week: 'Semana',
day: 'Dia',
allDayText : 'Todo Dia'
};
So what´s wrong?