map not displayed sencha touch 2.3.1

I have a list, on selecting an item from the list (screenshot), details about that item are displayed in a container(con1) which also has a button in it to show position on map inside another container(con2), but on clicking the button the map is not being displayed, and no error shown also.

I.ve added



<script type="text/javascript" src="http://ift.tt/PV0u3s; to index.html file inside body tags.

container code

button tap listener