diff --git a/WebContent/Frame/page/js/as_widget.js b/WebContent/Frame/page/js/as_widget.js
index 69b871f8f..4e324d84c 100644
--- a/WebContent/Frame/page/js/as_widget.js
+++ b/WebContent/Frame/page/js/as_widget.js
@@ -178,8 +178,8 @@ var AsButton = {
 			try{
 				fun();
 			}finally{
-				var b = this + "";
-				if(b != "undefined") {
+				var b = btn[0].clientHeight;
+				if(b > 0) {
 					btn.removeClass('unable');
 				}
 			}