General_Animation.coffee

window.requestAnimationFrame ||= 
	window.webkitRequestAnimationFrame || 
	window.mozRequestAnimationFrame    || 
	window.oRequestAnimationFrame      || 
	window.msRequestAnimationFrame     || 
	(callback, element) ->
		window.setTimeout( ->
			callback(+new Date())
		, 1000 / 60)

animate = (func)->
	rfunc = ->
		func()
		requestAnimationFrame(rfunc)
	
## Example :
a = 1

$ ->

	# declate a function:
	myFunc = ->
  		a=1 if a>300
		a+=2
		
		$('#pic').css
			width:a
		
	# animate it:  
	
	animate(myFunc)()