hover & div layer Options

is it possible to use hover options like in css on a div layer?
how?

if yu want an example.....
lets say i have something like this

CODE

<!-- begin code provided by createblog.com -->

<ilayer name="picture">
<div id="picture" style="BACKGROUND: transparent; overflow:auto; ">
<img src="URL"></img>
</div>

<!-- end code provided by createblog.com -->

ok......lets say i have a picture there, and i want it to blur when i put my mouse on it (which is hover), how do i make that happen?