Retrieves the Uniform Resource Name (URN) of the behavior that fired the event. 
Syntax
event.srcUrn [ = sUrn ]
Possible Values
| sUrn | String that
specifies or receives  the URN identifier. | 
The property is read/write.
The property has a default value of 
null.
Expressions can be used in place of the preceding value(s), as of Microsoft® Internet Explorer 5.  For more information, see About Dynamic Properties.
Remarks
This property is set to null unless both of the following conditions are true:
- A behavior currently is attached to the element on which the event is fired. 
 - The behavior defined in the preceding bullet has specified a URN identifier and fired the event. 
 
Standards Information
There is no public standard that applies to this property.
Applies To
See Also
behaviorUrns, urns