return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b; 
return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b; 
	sineInOut: function(t, b, c, d){		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;	}
5733	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5733/7d2be10b3af4ab12969bb1bf312d807abdba985b/Fx.Base.js/buggy/Effects/Fx.Base.js