fix effects tests failure

src/css.js

@@ -116,10 +116,6 @@ jQuery.fn.extend({
 	toggle: function( state, fn2 ) {
 		var bool = typeof state === "boolean";
 
-		if ( jQuery.isFunction( state ) && jQuery.isFunction( fn2 ) ) {
-			return eventsToggle.apply( this, arguments );
-		}
-
 		return this.each(function() {
 			if ( bool ? state : isHidden( this ) ) {
 				jQuery( this ).show();

src/deprecated.js

@@ -60,7 +60,13 @@ jQuery.sub = function() {
 	return jQuerySub;
 };
 
-jQuery.fn.toggle = function( fn ) {
+var oldToggle = jQuery.fn.toggle;
+jQuery.fn.toggle = function( fn, fn2 ) {
+
+	if ( !jQuery.isFunction( fn ) || !jQuery.isFunction( fn2 ) ) {
+		return oldToggle.apply( this, arguments );
+	}
+
 	// Save reference to arguments for access in closure
 	var args = arguments,
 	    guid = fn.guid || jQuery.guid++,

src/effects.js

@@ -445,9 +445,7 @@ Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
 jQuery.each([ "toggle", "show", "hide" ], function( i, name ) {
 	var cssFn = jQuery.fn[ name ];
 	jQuery.fn[ name ] = function( speed, easing, callback ) {
-		return speed == null || typeof speed === "boolean" ||
-			// special check for .toggle( handler, handler, ... )
-			( !i && jQuery.isFunction( speed ) && jQuery.isFunction( easing ) ) ?
+		return speed == null || typeof speed === "boolean" ?
 			cssFn.apply( this, arguments ) :
 			this.animate( genFx( name, true ), speed, easing, callback );
 	};