function usuarioFormHandler(){
	var botao = document.getElementById('botao');
	if (http.readyState == 1) {
		botao.value = 'Processando...';
	}
	if(http.readyState == 4){
        var response = http.responseText;
        if (response == 'OK') {
        	alert('Cadastro efetuado com sucesso!');
        	openPage('Front.inicio');
        } else {
        	alert(response);
        }
        botao.disabled = false;
        botao.value = 'Salvar';
    }
}