我如何改变指针指针手当我的鼠标在<tr>在<表>
<table class="sortable" border-style:>
<tr>
<th class="tname">Name</th><th class="tage">Age</th>
</tr>
<tr><td class="tname">Jennifer</td><td class="tage">24</td></tr>
<tr><td class="tname">Kate</td><td class="tage">36</td></tr>
<tr><td class="tname">David</td><td class="tage">25</td></tr>
<tr><td class="tname">Mark</td><td class="tage">40</td></tr>
</table>