表格交替颜色变化样式

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<style type="text/css"> 
td {font-size:12px;color:#333333;line-height:150%}
tr {background-color:expression((this.sectionRowIndex%2==0)?"#ffffff":"#f4f4f4")} 
</style>
<table cellspacing="0" cellpadding="0" width="345" border="0">
  <tbody>
    <tr>
     <td>fslkdjflalsdf</td>
    </tr>
     <tr>
     <td>fslkdjflalsdf</td>
    </tr>
     <tr>
     <td>fslkdjflalsdf</td>
    </tr>
     <tr>
     <td>fslkdjflalsdf</td>
    </tr>
     <tr>
     <td>fslkdjflalsdf</td>
    </tr>
  </tbody>
</table>