var HelpWindowObject = null;

function openHelpWindow(helpPage) {
    if (HelpWindowObject == null || HelpWindowObject.closed) {
        HelpWindowObject = window.open(helpPage + "?newWin=true", "HelpWindowName", "resizable=yes,scrollbars=yes,status=yes,width=800,height=500");
        if (HelpWindowObject == null) {
            alert("Help window was not opened.  If you are using a pop-up blocker, please check the settings.");
        }
    } else {
        HelpWindowObject.location.assign(helpPage);
        HelpWindowObject.focus();
    }
}

function getBackButton() {
    document.write("<button type='button' onClick='window.history.back();'");
    if (document.location.href.indexOf("newWin=true") > -1) {
        document.write(" disabled");
    }
    document.write(">Back</button>");
}