5456 	show: function( speed, callback ) {  argument
5457 		if ( speed || speed === 0) {
5458 			return this.animate( genFx("show", 3), speed, callback);
5500 	hide: function( speed, callback ) {  argument
5501 		if ( speed || speed === 0 ) {
5502 			return this.animate( genFx("hide", 3), speed, callback);
5544 	fadeTo: function( speed, to, callback ) {  argument
5546 					.animate({opacity: to}, speed, callback);
5549 	animate: function( prop, speed, easing, callback ) {  argument
5550 		var optall = jQuery.speed(speed, easing, callback);
5673 	jQuery.fn[ name ] = function( speed, callback ) {
5674 		return this.animate( props, speed, callback );
5679 	speed: function( speed, easing, fn ) {  argument
5680 		var opt = speed && typeof speed === "object" ? speed : {
5682 				jQuery.isFunction( speed ) && speed,
5683 			duration: speed,