function openPDF(pdf) {
    var top = 50;
    var left = (screen.width) - 300;
    selector = window.open(pdf, "STYLES", "width="+ screen.width +",height="+ screen.height +",resizable=no,toolbar=no,titlebar=no,menubar=no,location=no,scrollbars=yes,status=yes,top=0,left=0");

}