/*


 * jQuery Easing v1.1 - http://gsgd.co.uk/sandbox/jquery.easing.php


 *


 * Uses the built in easing capabilities added in jQuery 1.1


 * to offer multiple easing options


 *


 * Copyright (c) 2007 George Smith


 * Licensed under the MIT License:


 *   http://www.opensource.org/licenses/mit-license.php


 */





jQuery.easing = {


	easein: function(x, t, b, c, d) {


		return c*(t/=d)*t + b; // in


	},


	easeinout: function(x, t, b, c, d) {


		if (t < d/2) return 2*c*t*t/(d*d) + b;


		var ts = t - d/2;


		return -2*c*ts*ts/(d*d) + 2*c*ts/d + c/2 + b;		


	},


	easeout: function(x, t, b, c, d) {


		return -c*t*t/(d*d) + 2*c*t/d + b;


	},


	expoin: function(x, t, b, c, d) {


		var flip = 1;


		if (c < 0) {


			flip *= -1;


			c *= -1;


		}


		return flip * (Math.exp(Math.log(c)/d * t)) + b;		


	},


	expoout: function(x, t, b, c, d) {


		var flip = 1;


		if (c < 0) {


			flip *= -1;


			c *= -1;


		}


		return flip * (-Math.exp(-Math.log(c)/d * (t-d)) + c + 1) + b;


	},


	expoinout: function(x, t, b, c, d) {


		var flip = 1;


		if (c < 0) {


			flip *= -1;


			c *= -1;


		}


		if (t < d/2) return flip * (Math.exp(Math.log(c/2)/(d/2) * t)) + b;


		return flip * (-Math.exp(-2*Math.log(c/2)/d * (t-d)) + c + 1) + b;


	},


	bouncein: function(x, t, b, c, d) {


		return c - jQuery.easing['bounceout'](x, d-t, 0, c, d) + b;


	},


	bounceout: function(x, t, b, c, d) {


		if ((t/=d) < (1/2.75)) {


			return c*(7.5625*t*t) + b;


		} else if (t < (2/2.75)) {


			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;


		} else if (t < (2.5/2.75)) {


			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;


		} else {


			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;


		}


	},


	bounceinout: function(x, t, b, c, d) {


		if (t < d/2) return jQuery.easing['bouncein'] (x, t*2, 0, c, d) * .5 + b;


		return jQuery.easing['bounceout'] (x, t*2-d,0, c, d) * .5 + c*.5 + b;


	},


	elasin: function(x, t, b, c, d) {


		var s=1.70158;var p=0;var a=c;


		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;


		if (a < Math.abs(c)) { a=c; var s=p/4; }


		else var s = p/(2*Math.PI) * Math.asin (c/a);


		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;


	},


	elasout: function(x, t, b, c, d) {


		var s=1.70158;var p=0;var a=c;


		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;


		if (a < Math.abs(c)) { a=c; var s=p/4; }


		else var s = p/(2*Math.PI) * Math.asin (c/a);


		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;


	},


	elasinout: function(x, t, b, c, d) {


		var s=1.70158;var p=0;var a=c;


		if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);


		if (a < Math.abs(c)) { a=c; var s=p/4; }


		else var s = p/(2*Math.PI) * Math.asin (c/a);


		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;


		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;


	},


	backin: function(x, t, b, c, d) {


		var s=1.70158;


		return c*(t/=d)*t*((s+1)*t - s) + b;


	},


	backout: function(x, t, b, c, d) {


		var s=1.70158;


		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;


	},


	backinout: function(x, t, b, c, d) {


		var s=1.70158;


		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;


		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;


	},


	linear: function(x, t, b, c, d) {


		return c*t/d + b; //linear


	}


};