I want a div element to stretch across that is 33% width with a background image done in css 

```
background-image:url(); background-size:cover 

```

How do I animate a zoom-in of the image of the background in the div on mouseover or mouseneter, is there a plugin that can do this? The background div has to use background-size:cover because it's an elastic page.

I don't have a fiddle yet cos I don't know where or how to start