Manipulate DOM class with CoffeeScript

DomClass.coffee

# DOM Class - based on http://www.openjs.com/scripts/dom/class_manipulation.php
class @DomClass
	this.has = (el, className) ->
		return el.className.indexOf(className) != -1



	this.add = (el, className) ->
		if !this.has(el, className)
			el.className += ' ' + className



	this.remove = (el, className) ->
		if this.has(el, className)
			regex = new RegExp('(\\s|^)' + className + '(\\s|$)')
			el.className = el.className.replace(regex, ' ')