鼠标移上和取开的效果
<html>
<head>
<script type="text/javascript">
function mouseOver()
{
document.b1.style.background ="skyblue"
}
function mouseOut()
{
document.b1.style.background ="green" }
</script>
</head>
<body>
<a href="" target="_blank">
<img border="0"" name="b1" onmouseOver="mouseOver()"
onmouseOut="mouseOut()" />
</a>
</body>
</html>
属性需要对单词进行理解，结合函数实现自己需要的效果，常用的onload、onmouseover、onclick等要记熟；