<image src="http://www.mamicode.com/img1" onm ouseover="this.src=http://www.mamicode.com/‘img2‘" onm ouseout="this.src=http://www.mamicode.com/‘img1‘">

2.onmouseover  onmouseout 改变文字背景色：

<div width="100" height="100" onm ouseover="style.backgroundColor=‘#fff‘"

onmouseout="style.backgroundColor=‘#bbb‘" bgcolor="#bbb">文字</div>

3..onmouseover  onmouseout 改文字变背景图：

<div width="100" height="100" onm ouseOver="this.background=‘1.gif‘"

onMouseOut="this.background=‘2.gif‘" background="2.gif">文字</div>