function launchWindow(sUrl,sName,w,h,scrollbars) {
    var x = (screen.width - w) / 2
    var y = (screen.height - h) / 2;

    var thisWin = window.open(sUrl, sName, "left="+x+",top="+y+",width="+w+",height="+h+",scrollbars="+scrollbars);
    thisWin.focus();
}