function SelectAll(button,selectElement)
{
  //var input = document.getElementsByTagName("input");
  var input = document.getElementsByName(selectElement);
  for (var i=0; i<input.length; i++)
  {
     if (input[i].type == "checkbox")// && /^del_id.*/i.test(input[i].name))
         input[i].checked = button.checked; //得到总控的复选框的选中状态

  }
}