评分前添加无法修改提示

public/javascripts/seems_rateable/jRating.js

@@ -138,7 +138,14 @@
 					$("p.jRatingInfos").remove();
 				},
 				click : function(e){
-                    var element = this;
+                   var flag = confirm("确定评分？（学生评分之后将无法修改）");
+                   if(!flag)
+                   {
+                       e.cancel();
+                   }
+
+
+                   var element = this;
 					
 					/*set vars*/
 					hasRated = true;