Titanium Appcelerator Quickie: Create SlideIn View - from http://www.clearlyinnovative.com/blog/post/3166077546/titanium-appcelerator-quickie-create-slidein-view

ci_Quickie_SlideInView.js

Titanium.UI.setBackgroundColor('#000');

// create tab group
var tabGroup = Titanium.UI.createTabGroup();

//
// create base UI tab and root window
var win1 = Titanium.UI.createWindow({
    title:'Tab 1',
    backgroundColor:'#fff'
});
var tab1 = Titanium.UI.createTab({
    icon:'KS_nav_views.png',
    title:'Tab 1',
    window:win1
});

var label1 = Titanium.UI.createLabel({
	color:'#999',
	text:'Click to Toggle Slide In Menu',
	font:{fontSize:20,fontFamily:'Helvetica Neue'},
	textAlign:'center',
	width:'auto'
});

win1.add(label1);
var bottomMenu = Ti.UI.createView({
    width:'100%',
    height:100,
    bottom:-100,
    backgroundColor:'#f44'
});

win1.add(bottomMenu);

label1.addEventListener('click', function(e){
    // create variable to keep track of visibility
    if (bottomMenu._up == true) {
        bottomMenu.animate({bottom:-100,duration:500});
        bottomMenu._up = false;
    } else {
        bottomMenu.animate({bottom:0,duration:500});
        bottomMenu._up = true;
    }
});

//
//  add tabs
tabGroup.addTab(tab1);

// open tab group
tabGroup.open();