| Index: lib/elemHide.js | 
| =================================================================== | 
| --- a/lib/elemHide.js | 
| +++ b/lib/elemHide.js | 
| @@ -374,17 +374,19 @@ let ElemHide = exports.ElemHide = | 
| ElemHide.applied = false; | 
| } | 
| }, | 
|  | 
| /** | 
| * Retrieves the currently applied stylesheet URL | 
| * @type String | 
| */ | 
| -  get styleURL() ElemHide.applied ? styleURL.spec : null, | 
| +  get styleURL() { | 
| +    return ElemHide.applied ? styleURL.spec : null; | 
| +  }, | 
|  | 
| /** | 
| * Retrieves an element hiding filter by the corresponding protocol key | 
| */ | 
| getFilterByKey: function(/**String*/ key) /**Filter*/ | 
| { | 
| return (key in filterByKey ? filterByKey[key] : null); | 
| }, | 
|  |