Multi box set to single selection

<table class= "Grid" singleselect= "true" >
<thead>
<tr>
&LT;TD style= "width:20px; Text-align:center; " >

</td>
&LT;TD style= "width:100px; Text-align:center; " >
Business Number
</td>
&LT;TD style= "width:120px; Text-align:center; " >
Large class name
</td>
&LT;TD style= "width:120px; Text-align:center; " >
Small class name
</td>
&LT;TD style= "width:120px; Text-align:center; " >
Node name
</td>
&LT;TD style= "width:100px; Text-align:center; " >
Applicant
</td>
&LT;TD style= "width:80px; Text-align:center; " >
Contact information
</td>
&LT;TD style= "width:120px; Text-align:center; " >
Application time
</td>
</tr>
</thead>
<tbody id= "Tabody_node" >
&LT;TR&GT;&LT;TD colspan= "8" class= "trloading" ><span> loading data, please wait ...</span></td></tr>
</tbody>
</table>

Setting: Singleselect= "true" multi box becomes a single selection

Multi box set to single selection