사이드메뉴 클릭시 메뉴 글자색 빨간색으로 변화 주기

<?php
if (!defined('_GNUBOARD_')) exit;

if($bo_table){
$menu_url = G5_URL."/bbs/board.php?bo_table=".$bo_table;
}else{
$menu_url = G5_URL.$_SERVER['REQUEST_URI'];
}
$menu = sql_fetch(" select * from {$g5['menu_table']} where me_use = '1' and me_link = '$menu_url' ");
$me_code = substr($menu['me_code'],0,2);
?>
<script type="text/javascript">
function display_submenu(num) {
    document.getElementById("mysub"+num).style.display="block";
}
</script>
<script>
// 지우지 말아주세요. 새창 등에서도 사용합니다.
$(document).ready(function() {
    $("#mysubmenu a").on("click", function(e){ //링크 클릭시
        var $data_midtxt = $(this).attr("data-midtxt");
        if( $data_midtxt ){
            $.cookie('sub_midtxt', $data_midtxt, { path: '/' });
        } else {
            $.cookie('sub_midtxt', null, { path: '/' });
        }
    });
});
</script>
  <style>
 #mysubmenu  {border: 1px solid #d2d9e6; border-bottom: 1px solid #c1ccda;margin:0px 15px 15px;background:#fff;position:relative;
 -webkit-box-shadow: 0 1px 2px rgba(0,0,0,0.1);
 -moz-box-shadow: 0 1px 2px rgba(0,0,0,0.1);
 box-shadow:0 1px 2px rgba(0,0,0,0.1)}
 #mysubmenu ul {list-style:none; margin:0; padding:0;}
 #mysubmenu li { margin: 0; list-style: none;}

 #mysubmenu li.leftmenu_b {line-height:35px; margin-top:0px; padding:5px 0 3px 35px; border-bottom:0px solid #dddddd; text-align:left; font-size:14pt; font-weight:bold; background:#d1d1d1; }
 #mysubmenu li.leftmenu_b a{ color:#F70303; }

 #mysubmenu li.leftmenu_s {line-height:33px; margin-bottom:0px; padding-left:35px; border-bottom:0px solid #e6e6e6; font-size:12pt;font-weight:bold; background:#fff; color:#333; }
 #mysubmenu li.leftmenu_s:hover { background:#fff;color:#F40B6E; }

 #mysubmenu li.leftmenu_s_on {line-height:33px; margin-bottom:0px; padding-left:35px; border-bottom:0px solid #e6e6e6; font-size:12pt;font-weight:bold; background:#5aacca; color:#C3E4F1;  }
 #mysubmenu li.leftmenu_s_on a{ color:#C3E4F1; }

 #mysubmenu li.leftmenu_s a:focus, #mysubmenu li.leftmenu_s a:hover { color:#fff;color:#F40B6E;}

 #mysubmenu li.leftmenu_c {line-height:33px; margin-bottom:0px; padding-left:15px; border-bottom:0px solid #e6e6e6; font-size:12pt;font-weight:bold; background:#fff; color:#333; }
 #mysubmenu li.leftmenu_c:hover { background:#fff;color:#F40B6E; }

 #mysubmenu li.leftmenu_c_on {line-height:33px; margin-bottom:0px; padding-left:35px; border-bottom:0px solid #e6e6e6; font-size:12pt;font-weight:bold; background:#5aacca; color:#C3E4F1;  }
 #mysubmenu li.leftmenu_c_on a{ color:#C3E4F1; }

 #mysubmenu li.leftmenu_c a:focus, #mysubmenu li.leftmenu_s a:hover { color:#fff;color:#F40B6E;}
 </style>
    <div id="mysubmenu">

<?php
        $tmp_code = substr($me_code,0,2);
        $tmp_menu_name=sql_fetch(" select * from {$g5['menu_table']} where me_use = '1' and length(me_code) = '2' and me_code = '$tmp_code' ");
        ?>

    <li class="leftmenu_b"><font color=#F70303><h3><?=$tmp_menu_name['me_name']?></h3></font>
<li>
        <?

        $sql2 = " select *
                    from {$g5['menu_table']}
                    where me_use = '1'
                      and length(me_code) = '4'
                      and substring(me_code, 1, 2) = '$tmp_code'
                    order by me_order,me_code, me_id ";
        $result2 = sql_query($sql2);

        for ($k=0; $row2=sql_fetch_array($result2); $k++) {
            if($k == 0)
                echo '<ul class="snb_2dul">'.PHP_EOL;
        ?>
            <li class="leftmenu_s">
                <a href="<?php echo $row2['me_link']; ?>" target="_<?php echo $row2['me_target']; ?>" class="leftmenu_s <?php if($row2['me_code']==substr($me_code,0,4)) { echo "on"; }?>"><?php echo $row2['me_name'] ?></a>
        <?php

            //3차메뉴 불러 오기.
            $sql3 = " select *
                        from {$g5['menu_table']}
                        where me_use = '1'
                          and length(me_code) = '6'
                          and substring(me_code, 1, 4) = '{$row2['me_code']}'
                        order by me_order,me_code, me_id ";
            $result3 = sql_query($sql3);
            $num3 = sql_num_rows($result3);
            if($num3>0){
                echo '<ul class="snb_3dul">'.PHP_EOL;
                while($row3=sql_fetch_array($result3)){
        ?>
                <li class="leftmenu_c">
                        <a href="<?php echo $row3['me_link']; ?>" target="_<?php echo $row3['me_target']; ?>" class="leftmenu_c <?php if($row3['me_code']==$me_code) { echo "on2"; }?>">-<?php echo $row3['me_name'] ?></a>
                    </li>
        <?php
                }
                echo '</ul>'.PHP_EOL;
            }
            echo '</li>'.PHP_EOL;                    

        }

        if($k > 0)
            echo '</ul>'.PHP_EOL;
        ?>
       

</div>