Support for zooming on AxisY

```
Visifire Version           : <Copy from: 'about:version'>
Silverilght / WPF          :
Managed Code / JavaSctipt  :
Browser and its Version    :

Support for zooming on AxisY.
http://www.visifire.com/forums/index.php?showtopic=2609&st=0&gopid=11890&#entry1
1890
```

Original issue reported on code.google.com by `shoaibi...@gmail.com` on 6 Apr 2011 at 4:40
