Location and entry maps

used MapBox Api to generate map on location show page.  
--map displays marker for each entry near the map center.
--javascript is in the html file.  I was having trouble getting the ruby variables to work in a seperate js.erb file.  Help would be appreciated.
I changed it to this because I thought it would be creating a new instance for every entry.  and that this would be slower for a large number of entries.