function showHelp(helpPage) {
    if (helpPage == null) {
        helpPage="menu.jsp"
    }
    window.open("help/helpMain.jsp?helpContentURL=" + helpPage, "help", "dependent=yes,width=700,height=500,screenX=10,screenY=10,left=10,top=10,menubar=no,resizable=yes,status=no,toolbar=no,scrollbars=yes");
}