Answer by murkantilism

So you want the button to become larger when the mouse scrolls over it? Or it's becoming larger and you don't what it to? Assuming you *want* it to become bigger, use [OnMouseEnter](http://docs.unity3d.com/Documentation/ScriptReference/MonoBehaviour.OnMouseEnter.html). That will tell you when the mouse has scrolled over the button. Then within the OnMouseEnter function, change the size of the button to make it bigger.