function Strong () {
	
}

Class(Strong);

Strong.easeIn = function (t, b, c, d) {
	return c*(t/=d)*t*t*t*t + b;
}

Strong.easeOut = function (t, b, c, d) {
	return c*((t=t/d-1)*t*t*t*t + 1) + b;
}

Strong.easeInOut = function (t, b, c, d) {
	if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
	return c/2*((t-=2)*t*t*t*t + 2) + b;
}