关于mouseout和mouseover高亮显示的问题

代码如下：为什么鼠标移上去不会高亮显示呢，我菜鸟
<table width="950" border="0" align="center" cellpadding="0" cellspacing="1" >
<tr bgcolor="#FFEFB6" onMouseOut="mout(this,'#FFEFB6');" onMouseOver="mover(this,'#ffffff');" align=right>
<td height="25" align=center>1</td>
<td style="padding-left:4px; text-align:left;">
<a href="team.php?id=18" target="_blank">尼克斯</a></td>
<td>5</td>
<td>0</td>
<td>100%</td>
<td>0</td>
<td>103.4</td>
<td>87.8</td>
<td>15.6</td>
<td>3胜0负</td>
<td>2胜0负</td>
<td>4胜0负</td>
<td>2胜0负</td>
<td>
0胜0负</td>
<td>
5胜0负</td>
<td>
1胜0负</td>
<td>
4胜0负</td>
<td>5胜0负</td>
<td>5连胜</td>
</tr>
<tr bgcolor="#FFEFB6" onMouseOut="mout(this,'#FFEFB6');" onMouseOver="mover(this,'#ffffff');" align=right>
<td height="25" align=center>2</td>
<td style="padding-left:4px; text-align:left;">
<a href="team.php?id=14" target="_blank">热火</a></td>
<td>6</td>
<td>2</td>
<td>75%</td>
<td>0.5</td>
<td>105.5</td>
<td>100.3</td>
<td>5.2</td>
<td>4胜0负</td>
<td>2胜2负</td>
<td>3胜1负</td>
<td>1胜0负</td>
<td>
2胜0负</td>
<td>
3胜2负</td>
<td>
1胜2负</td>
<td>
5胜0负</td>
<td>6胜2负</td>
<td>1连胜</td>
</tr>
<tr bgcolor="#FFEFB6" onMouseOut="mout(this,'#FFEFB6');" onMouseOver="mover(this,'#ffffff');" align=right>
<td height="25" align=center>4</td>
<td style="padding-left:4px; text-align:left;">
<a href="team.php?id=17" target="_blank">篮网</a></td>
<td>4</td>
<td>2</td>
<td>66.7%</td>
<td>1.5</td>
<td>96.5</td>
<td>92.2</td>
<td>4.3</td>
<td>3胜1负</td>
<td>1胜1负</td>
<td>4胜1负</td>
<td>1胜0负</td>
<td>
0胜0负</td>
<td>
2胜2负</td>
<td>
1胜2负</td>
<td>
3胜0负</td>
<td>4胜2负</td>
<td>3连胜</td>
</tr>
</table>