Move your mouse over the box below and watch it change colors from red, to blue, then back again.
<div id="colormouse" style="width:200;height:50;background-color:#ff0000;color:#000000;font-size:12pt"> Mouse over me to change color </div> <smil:par begin="colormouse.onmouseover" > <smil:animateColor targetElement="colormouse" attributeName="background-color" values="#ff0000;#0000ff" begin="0s" dur="1s" autoreverse="true" /> </smil:par>