why can't I load a layers list to select from to the map in openLayers 3, addEventLis

[المشرف العام]

I've tried to incorporate this sample that shows how to switch base layers into a page I am working on:

http://openlayers.org/en/v3.10.1/examples/bing-maps.html

When I try to load my page with the code included I get this error: Uncaught Error: addEventListener and attachEvent are unavailable. ol.js:34. I've googled this some but haven't found the answer yet. Here is all of the code for my page - I've pieced together code from various samples so I know it needs some cleanup, but wanted to include everything I have for reference. Can anyone help?

Vector layer example
http://www.gisarab.com/

Aerial with labels Road

أكثر...