We would like to know how to change background color.
<!DOCTYPE html>
<html>
<head>
</head><!--from w w w .j a v a 2 s . c o m-->
<body>
<div id="testing"
onmouseover="this.style.backgroundColor='red';"
onmouseout="this.style.backgroundColor='blue';">
This is a testing ...</div>
</body>
</html>
The code above is rendered as follows: