Why won't onmouseover/out work on td bgcolor

[ikeo]

This is more of an academic exercise than anything at this point, but I really want to know why this won't work

<td bgcolor="#BACDF1" onMouseover="this.bgcolor='white';" onMouseout="this.bgcolor='#BACDF1';" align="center">Partners</td>

but this will

<td style="background-color:#BACDF1; border-right: 1px solid black;" onMouseover="this.style.backgroundColor='white';" onMouseout="this.style.backgroundColor='#BACDF1';" align="center" style="border-right: 1px solid black;">Testimonials</td>

Thanks

[evan80]

Because the DOM property is named bgColor, not bgcolor.

[ikeo]

Boy do I feel silly.
Thanks for the pointer.