$.proxy( ctx1.pon_val, ctx1 )
width: 30, height: 30, slide
$.proxy( ctx2.pon_val, ctx2 )
width: 100, height: 100, fade
$.proxy( ctx1.pon_val, ctx2 )
width: 100, height: 100, slide
$.proxy( ctx2.pon_val, ctx1 )
width: 30, height: 30, fade