Thanks Jonathan,
yes, at the end you confirm what i was doing, so change all as mask and animate the property withe the attributes as the first test that i post.
I'm going to change all
One suggest is to add a note on the css3 page, because the browser support text (Browser support: VERY GOOD (Chrome 2, Safari 1.3, Firefox 1, IE 9, Opera 9.2, iOS 3.2, Android 2.1)) and the details link shoul be updated as we said
Thanks again