Mouse Over not firing on child elements

I am having a problem where the onmouseover event is not firing when the mouse is hovering over a child element of the div that has the onmouseover event linked to it. I am doing something as simple as:



I know that the mouseover event is being set correctly because if I hover over the div and not a child element of the div, the alert is fired.

Can anyone think of why this may be happening? I am out of ideas

Thanks in advance