js:
<script type="text/javascript">
$(document).ready(function() {
$("#checkall").click(
function(){
if(this.checked){
$("input[name='checkname']").each(function(){this.checked=true;});
}else{
$("input[name='checkname']").each(function(){this.checked=false;});
}
}
);
});
</script>
<table>
<thead>
<tr>
<th style="width: 5px">
<input type="checkbox" id='checkall' name='checkall' />
</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<input type="checkbox" id='${對象.id}' name='checkname' value='${對象.id}'/>
</td>
</tr>
</tbody>
</table>