X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=0.5.x%2Fjavascripts%2Fxdoc.js;h=c47c14fa6149371f24885489190b53bc82f596f5;hb=2621070c032954702155d4a315535b8b1aafd616;hp=712ba3decefb92ca63260aed47102ee5e7d0f915;hpb=acc1454b8956c5191f5a7492c47f373957c527ee;p=pettanr%2FclientJs.git

diff --git a/0.5.x/javascripts/xdoc.js b/0.5.x/javascripts/xdoc.js
index 712ba3d..c47c14f 100644
--- a/0.5.x/javascripts/xdoc.js
+++ b/0.5.x/javascripts/xdoc.js
@@ -1463,10 +1463,12 @@ var XDocument = ( function( window, document ){
 			},
 			style : function( v ){
 				if( v instanceof NodeStyle ){
-					this.__style && this.__style.unRegister( this );
-					this._style = v;
-					this.__style = StylePrivate.getPrivateData( v );					
-					this.__style.register( this );
+					if( v !== this._style ){
+						this.__style && this.__style.unRegister( this );
+						this._style = v;
+						this.__style = StylePrivate.getPrivateData( v );					
+						this.__style.register( this );						
+					};
 					return this.User;
 				} else
 				if( v === null ){