Any tips for creating 3d models that link to other urls when clicked on?

In more detail, I have loaded a 3d model into one of my scenes and would like to have the model link to another url when clicked on. 

I am preloading the model assets as such:

```
<a-assets>

<a-asset-item id="foo-obj" crossorigin="anonymous" src="https://cdn.glitch.com/62d6d539-d638-4686-ba78-f926cc1d10a8%2FPortal_FInal.obj?1544456633029"></a-asset-item>
<a-asset-item id="foo-mtl"  src="assets/models/Portal_FInal2.mtl"></a-asset-item>  
</a-assets>

```

and then calling the the model into the scene as such:

```
<a-obj-model id="link" src="#foo-obj" mtl="#foo-mtl"  position="3 -3 -11" rotation="0 45 0"> ></a-obj-model> 

```

I have tried adding an href property to the object to no avail. I was able to get the camera and cursor into the scene. But I have not gotten the cursor to recognize the link. Any recommendations?