Code an updated javascript based on the Github sample for another firebase stream of data

I am looking to update the below javascript (which connects to firebase) to use another stream of firebase data to have a similar Odometer javascript output. [login to view URL] or more specifically [login to view URL] Instead of having last price bid and ask, there will be about 8 variables..(replacing bitcoin for others)... each one should spin like the github example when firebase source data is updated. so the code works today, just need to expand it to allow for additional variables. Proficiency in javascript is required.