<script>
function checkAll(obj,id)
{
var check = document.getElementsByName(id);
for(i=0; i<check.length; i++)
{
check[i].checked = obj.checked;
}
}
</script>
表头
<input class=check-all type=checkBox onclick=checkAll(this,'vgroup_id[]') />
表身
<input name=vgroup_id[] value= type=checkBox />