almende/vis — pull request #277 by sfairgrieve (2014-08-29 14:45:03+00:00)
Title: [Network] Added support for a broken image fallback when node image fails to load

I updated the network/node image code to accept a broken image url to use when a node image fails to load. The broke image url to use can be specified via a _brokenImage_ property on a node.

```javascript
var nodeProperties = {
...
shape: 'image',
image: 'some url',
brokenImage: 'fallback url to use'
}
```

Let me know what you think. Basically this stemmed out of viewing networks in social media where the node image being used is a person's thumbnail. Occasionally these thumbnail images fail to load.

I didn't rebuild the files in the _dist_ directory. Let me know if you want me to do that. Thanks!