function abreAjudaOnline(depto) {
    if(!depto) depto = '2';
    url = 'http://www.sharpener.com.br/shphelp/livehelp.php?department=' + depto;
    window.open(url, 'shphelp', 'width=585,height=600,menubar=no,scrollbars=0,resizable=1');
}