CoffeeScript PushState Hijacking

### 
 Listens for clicks on a tags, if relative and the target is not blank it will use pushState
 otherwise we fall through to normal click handling. Note preventDefault might need to be 
 handled better in older browsers.
###
hijackRelativeURLs = ->
    document.addEventListener('click', (e) ->
        element = e.target

        if element?.nodeName == 'A'
            href = element.attributes.href?.textContent
            target = element.attributes.target?.textContent
            isAnchor = href.indexOf('#') is 0
            isRelative = href.indexOf('http') isnt 0

            if target isnt '_blank' and isRelative and not isAnchor
                history.pushState({}, '', href);
                e.preventDefault()
                return false
    )