switch blahBlah
{
    case 'this' :
        doThis() ;
        break;
    case 'main' :
        // What do I do here that is well behaved for all platforms???
        break;
    default:
        doFoo() ;
}

document.removeEventListener( "backbutton", function(){}, false );

document.addEventListener( "backbutton", OverrideBackButton, false );

function pageinit() {
            document.addEventListener("deviceready", deviceInfo, true);
        }


        function deviceInfo() {
            document.addEventListener("backbutton", onBackButton, true);
        }

        function onBackButton(e) {
            try{
                var activePage = $.mobile.activePage.attr('id');

                if(activePage == 'Options'){
                    closeOptions();
                } else if(activePage == 'Popup'){
                    closePopup();
                } else if(activePage == 'HomePage'){

                function checkButtonSelection(iValue){
                    if (iValue == 2){
                            navigator.app.exitApp();
                        }
                    }

                e.preventDefault();
                navigator.notification.confirm(
                    "Are you sure you want to EXIT the program?",
                    checkButtonSelection,
                    'EXIT APP:',
                    'Cancel,OK');
                } else {
                     navigator.app.backHistory();
                }
            } catch(e){ console.log('Exception: '+e,3); }
        }

if($("#mainPage").is(".ui-page-active")){

     navigator.app.exitApp();

}