zoneminder/web/skins/classic/views/js/group.js

function selectMonitors()
{
    createPopup( '?view=monitorselect&callForm=groupForm&callField=newGroup[MonitorIds]', 'zmMonitors', 'monitorselect' );
}

if ( refreshParent )
{
    opener.location.reload(true);
}

function configureButtons( element ) {

    if ( canEditGroups ) {
        var form = element.form;
        form.saveBtn.disabled = (element.value == 0);
    }
}

window.focus();