image onmouseover
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<script>
function kkk()
{
document.getElementById("a").src="http://www.baidu.com/img/logo.gif";
}
function kkk2()
{
document.getElementById("a").src="http://www.google.cn/intl/zh-CN/images/logo_cn.gif";
}
</script>
<img src="http://www.google.cn/intl/zh-CN/images/logo_cn.gif" name="a" id="a"
onMouseOver="kkk()" onMouseOut="kkk2()">