ActionScript 3.0 :: Detecting Mouse Events On Classes With Different Content Inside

I have a Card class. From this class, I have three possible children: Photo, Video and Info. In my main class, I want to create a few instances of these different classes without knowing what kind it is. But, no matter that, I want them all to listen to the mouse, so I may have something like this:

ActionScript Code:
var item:Card = new Photo();
item.addEventListener(MouseEvent.CLICK, mouseHandler);

The thing is: the Card class is kinda like a canvas... it has certain properties common to every type of item, but there's a space where it leaves it as a canvas... a Photo instance will load a photo there, a Video instance will load a video and a Info instance will load text to a TextField. The problem is that the event listener doesn't work the way I want it to... on an Info instance, the target of the click is the TextField; on a Photo instance is the picture... I want them all to be the class itself... in other words, I want to be able to parse the target as a child of the Card class. My code for the mouseHandler method is

ActionScript Code:
private function mouseHandler(e:MouseEvent):void
{
if(e.target is Photo)

[Code].....

That's the main idea... to be able to know what kind of object I'm clicking and access its properties... but on an Info instance, e.target is of type TextField... to be able to access the Info object, I have to do e.target.parent, and that is NOT the idea.