Garry Gorman

Hi All, I am going through the HTML Game tutorial and I am at the "multiple obstacles" part. I need to add multiple obstacles that behave differently eg. coins to collect, walls, dangers to avoid. Can someone help me with this. I have the HTML game tutorial finished and I am stuck adding stationary obstacles. If i cuuld get a link to a tutorial that would explain this, that would be great. Thanks Garry