.......................중복.......................
<script language="JavaScript">
        //체크 박스를 통해서 회원 선택하기
function selectAll() {
  var chk = eval("document.main_form");
  if (chk.chkEmail[].checked == true) {
for (var i=0; i<chk.length;i++) {
  if (chk[i].type == "checkbox" && chk[i].checked == false) {
chk[i].checked = true;

  }
}

  chk.sqlkey.value = 'ALL';
  } else {
for (var i=0; i<chk.length;i++) {
  if (chk[i].type == "checkbox" && chk[i].checked == true) {
chk[i].checked = false;
  }
}
chk.chkEmail[].checked = false;
chk.sqlkey.value = '';
  }
}

  </script>

      <?
  $ene_check1 = "<a href='javascript:selectAll();' style='cursor:default;'>";

          ?>
----------------------중복-------------------------------------


  <form name="main_form" method="post" style="margin:0px;" action="/member/cMonthMember/admMemberProcess/params/searchkey/<?=$searchkey?>/searchvalue/<?=$searchvalue?>/svckind/<?=$svckind?>/startday/<?=$startday?>/endday/<?=$endday?>/">
<input type="hidden" name="sqlkey">
<table width="1160" border="0" cellspacing="0" cellpadding="0">
<tr>
  <td valign="top">
<table width="100%" border="0" cellspacing="1" cellpadding="3" class="main">
<col width="50"></col>
<col width="150"></col>
<col width=""></col>
<col width="110"></col>
<col width="130"></col>
<col width="40"></col>
<col width="60"></col>
<col width="90"></col>
<col width="90"></col>
<col width="90"></col>
<col width="50"></col>
<col width="90"></col>
<col width="60"></col>
<col width="60"></col>
<tr class="title" align="center" height="30">
<td>번호</td>
<td>회사명</td>
<td>도메인</td>
<td>연락처</td>
<td>서비스종류</td>
<td>S</td>
<td>납부주기</td>
<td>정기납부일</td>
<td>사용기간</td>
<td>월이용료</td>
<td>개월</td>
<td>청구금액</td>
<td><?=$ene_check1?>발송11대상</td>
<td>발송일자</td>
</tr>
<? foreach ($data_list as $o): ?>
<tr bgcolor="<?=$o->bgcolor?>">
<td height="30" align="center"><?=$o->num?></td>
<td align="center"><?=$o->Title?></td>
<? if ($o->status == "S") { ?>
<td align="center" bgcolor="#47C83E"><a href="/member/cCustommember/admMemberView/params/searchkey/<?=$searchkey?>/searchvalue/<?=$searchvalue?>/mem_no/<?=$o->No?>/status/<?=$status?>/svckind/<?=$svckind?>/startday/<?=$startday?>/endday/<?=$endday?>/" target="_blank"><font color="#FFFFFF"><?=$o->Domain?></font></a></td>
<? } else if ($o->status == "E") { ?>
<td align="center" bgcolor="red"><font color="#FFFFFF"><a href="/member/cCustommember/admMemberView/params/searchkey/<?=$searchkey?>/searchvalue/<?=$searchvalue?>/mem_no/<?=$o->No?>/status/<?=$status?>/svckind/<?=$svckind?>/startday/<?=$startday?>/endday/<?=$endday?>/" target="_blank"><?=$o->Domain?></font></a></td>
<? } else { ?>
<td align="center"><a href="/member/cCustommember/admMemberView/params/searchkey/<?=$searchkey?>/searchvalue/<?=$searchvalue?>/mem_no/<?=$o->No?>" target="_blank"><?=$o->Domain?></a></td>
<? } ?>

<td align="center"><a href="#" onclick="javascirpt:popupWindow('[SMS]',350,300,'/cCommon/sendSMS/params/sms/smsNumber/<?=$o->Tel2?>/');return false;"><?=$o->Tel2?></a></td>
<td align="center"><?=$o->svc_d?></td>
<td align="center"><?=$o->scolor?><?=$o->simbol?></FONT><?=$o->asimbol?><?=($o->prepay=="A") ? "<font color=green>D</font>":""?></td>
<td align="center"><?=$o->payterm?>개월</td>
<td align="center"><?=$o->fontbgcolor1?><?=$o->Date?><?=$o->fontbgcolor2?></td>
<td align="center"><?=$o->usabledate?></td>
<td align="right"><?=number_format($o->Cost)?> 원&nbsp;</td>
<td align="center"><?=$o->unpaid_mon+$o->payterm+$o->bonus?></td>
<td align="right"><?=number_format($o->totfare)?> 원&nbsp;</td>
<td align="center"><input type="checkbox" name="chkEmail[]" id="chkEmail[]" onClick="javascript:selectAll();" value="<?=$o->Email?>||<?=$o->Tel2?>||<?=$o->No?>||<?=$o->Domain?>||<?=$o->svc_d?>||<?=$o->payterm?>||<?=$o->totfare?>||<?=$o->Date?>||<?=$o->Cost?>||<?=$o->Cost*$o->unpaid_mon?>||<?=($o->Name1!="") ? $o->Name1:$o->Name2?>" class="radio"></td>
<td align="center"><?=$o->msend_mmdd?></td>
</tr>

==================================

"발송11대상"을 클릭하면 함수 selectAll을 실행하고 각 글을 전부 체크되고 다시 눌으면

전부 해체 되고 이렇게 할려고 하는데요.

왜 안되는지 알고 싶네요 ㅠ,ㅠ

부탁드립니다.