Android Tab bar disapearing

Hi, I am porting a tabbed iPhone app to android which opens up fine with the tabs displayed at the top, but as soon as I open a window from the tab group it hides the tab bar and just shows the window. How do I make the tab bar stay there when I open a new window.

Any help is much appreciated, Matt

function viewCourse(title) {
    var self = Ti.UI.createWindow({
        title:title,
        backgroundColor:'white'
    });
    Ti.App.addEventListener('databaseUpdated', function(){
        tableRows();
    });
    var db = require('lib/db');
    var groupsWindow = require('ui/handheld/groupsWindow');
        //groupsWindow.containingTab = self.containingTab;
 
    var view = Ti.UI.createScrollView({
        backgroundColor:'transparent',
        height:'auto',
        width:'auto',
        contentWidth:'auto',
        contentHeight:'auto'
 
    });
    var table = Ti.UI.createTableView({});
    var tableRows = function(){
        //get courses from database
        var rows = db.select('course');
        var data = [];
 
        for(i=0;i<rows.length;i++){
            var row = Ti.UI.createTableViewRow({
            width:'90%',height:50, title:rows[i].title, id:rows[i].id,hasChild:true
            });
 
            //row.backgroundImage = Ti.Filesystem.resourcesDirectory + '/images/opac_bg.png';
            data.push(row);
        }
        table.setData(data);
    }
    tableRows();
 
    view.add(table);
 
...........
 
table.addEventListener('click', function(e) {
        var gw1 = new groupsWindow('View Groups',e.source.id);
        gw1.containingTab = self.containingTab;
        self.containingTab.open(gw1);
 
    });