remove windows

app.js

Ti.UI.setBackgroundColor('#252525');
var device = Ti.Platform.osname;
var ng = {};

// start data
(function() {
	ng.data = {};
	ng.data.device = Ti.Platform.osname;
	ng.data.current_window = null;
	ng.data.globalZ = 1;
	ng.data.windowID = 0;
	ng.data.window_stack = [];
	ng.data.ipadmenu = [{
  		title : 'News'  
  	}, {
  		title : 'Photos'
  	}, {
  		title : 'Videos'
  	}, {
  		title : 'Games'
  	}];
})();
// end data

// start functions
(function() {
	ng.functions = {};
	ng.functions.new_window = function(url, title, id) {
  	ng.data.globalZ++;
  	ng.data.current_window = Ti.UI.createWindow({
			device : ng.data.device,
			backgroundColor : '#888',
			backgroundLeftCap : 1,
			backgroundTopCap : 1,
			top : 70,
			height : 618,
			left : 350,
			width : 500, // 639
			zIndex : ng.data.globalZ,
			borderRadius : 10
		});

  	// create wrapper so we can remove it AND whatever is in it.
  	ng.functions.wrapper = Ti.UI.createView({
  		top : 20,
  		left : 20,
  		bottom : 20,
  		right : 20
  	});
  	ng.data.current_window.add(ng.functions.wrapper);
  	
  	// add new window to app
  	win.add(ng.data.current_window);

  	// push new window onto stack
  	var this_win_id = ng.data.windowID++;
  	ng.data.current_window.winID = this_win_id;
  	ng.data.window_stack.push(ng.data.current_window);
  };
  // make main menu on left
	ng.functions.set_ipad_menu = function(device, menu) {
		menu_array = [];
		var len = menu.length;
		for( m = 0; m < len; m++) {
			var menu_item = Ti.UI.createTableViewRow({
				backgroundColor : '#222',
				height : 50,
				width : 440,
				left : 0,
				top : 0,
				url : menu[m].url,
				id : m,
				title : menu[m].title
			});

			menu_item.addEventListener('click', function(e) {
				var id = e.rowData.id;
				var url = e.rowData.url;
				var title = e.rowData.ti;

				// opening new top-level window so close everything and replace
				for(var w in ng.data.window_stack){
				  if(ng.data.window_stack.length){
						win.remove(ng.data.window_stack[w]);
					}
				}
				// clean out array
				ng.data.window_stack = [];
				
				// open new window and reset vars
				//ng.functions.new_window(url, title, id);
				ng.data.windowID = 0;
				ng.data.globalZ = 1;
			});
			menu_array.push(menu_item);
		}
		return menu_array;
	};
})();
// end functions

// start ui
(function() {
	ng.ui = {};
	ng.ui.ipad = {};
	// top level tabgroup for ipad
	ng.ui.ipad.createRootTabgroup = function() {
		var index = Ti.UI.createTabGroup();
		win = Ti.UI.createWindow({
			navBarHidden : true,
			zIndex : 1
		});
		win.hideTabBar();
		var tab = Titanium.UI.createTab({
			window : win
		});
		index.addTab(tab);
		// open first window onload
		ng.functions.new_window('files/news/index.js', 'News', 0);
    ng.ui.main_menu = Ti.UI.createTableView({
			data : ng.data.ipadmenu,
			backgroundColor : '#333',
			left : 10,
			top : 70,
			width : 444,
			height : 554,
			borderRadius : 10,
			separatorColor : 'transparent'
		});
    win.add(ng.ui.main_menu);
		return index;
	};
	ng.ui.ipad.create_GENERIC_TableView = function(data, type) {
	 // var data = [];
		tv = Ti.UI.createTableView({
			backgroundColor : 'orange',
			left : 0,
			top : 0,
			right : 0,
			bottom : 0,
			separatorColor : 'transparent'
		});
		for(var i = 0; i < data.length; i++) {
			var row = Ti.UI.createTableViewRow({
  			backgroundColor : 'transparent',
  			selectedBackgroundColor : 'transparent',
  			top : 0,
  			left : 0,
  			right : 0,
  			height : 60,
  			title: data[i].title
  		});
			data[i] = row;
		}// end function
		tv.setData(data);
		return tv;
	};
})();
// end ui

// app.js
win = ng.ui.ipad.createRootTabgroup();
win.open();