will-change new property, to increase the speed of an animation boot

Property to increase the speed boot of an animation:
$(«#element»).css(«will-change», «animation»);
//when the animation has finished:
$(«#element»).css(«will-change», «auto»);

(Very recommendable to not declare by css in order to delete it once it was used. So add it with JQuery selectors and methods.)
It reserves-consumes quite resources and it is powerful tool which could also crash your webpage.So like the

Spiderman’s uncle said to him, a big power requires a big responsability

More info at:
http://dev.opera.com/articles/css-will-change-property/