[Moo] Re: elements to replace one element - how? (quickest way)

[Michael Russell]

For what it's worth, I believe the `replaceChild` was causing errors for 
some reason (granted I'm horrid at writing out those tests so that probably 
isn't the real issue). Anyhow... I made a test with an array of 500 spans 
and used the single injection per iteration method and one with creating a 
fragment, adding the spans to it and doing a single DOM injection here 
http://jsperf.com/frag-inject/3