<html>
<head>
<script type="text/javascript">
function bgChange(bg)
{document.getElementById('x').style.background="url(" + bg + ")"}
</script>
</head>
<body>
<p>本例演示如何向输入框插入背景图像。</p>
<p>把鼠标移动到这两幅图像上，输入框会获得一幅背景图像。</p>
<table width="300" height="100">
<tr>
<td onmouseover="bgChange('/i/eg_bg_03.gif')" background="/i/eg_bg_03.gif">
</td>
<td onmouseover="bgChange('/i/eg_bg_04.gif')" background="/i/eg_bg_04.gif">
</td>
</tr>
</table>
<form>
<input id="x" type="text" value="把鼠标移动到图像上" size="20">
</form>
</body>
</html>