로그인후 이용하라는 알람과 문구를 뜨게할려면 어떻게해야하나요?

<?phpif (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가include_once(G5_LIB_PATH.'/thumbnail.lib.php');include_once($board_skin_path.'/skin.lib.php');// add_stylesheet('css 구문', 출력순서); 숫자가 작을 수록 먼저 출력됨add_stylesheet('<link rel="stylesheet" href="'.$board_skin_url.'/style.css">', 0);add_stylesheet('<link rel="stylesheet" href="'.$board_skin_url.'/wookmark.css">', 0);add_stylesheet('<link rel="stylesheet" href="//netdna.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.css">', 0);?>  <div class="fz_header">  <div class="fz_total_count"><span> Total <strong><?php echo number_format($total_count) ?></strong></span></div>  <? if ($rss_href) { ?><div class="fz_rss"><a class="list_btn btn_rss" href="<?=$rss_href?>" title="RSS">RSS</a></div><?php }?> </div> <br>    <form name="fboardlist"  id="fboardlist" action="./board_list_update.php" onsubmit="return fboardlist_submit(this);" method="post">    <input type="hidden" name="bo_table" value="<?php echo $bo_table ?>">    <input type="hidden" name="sfl" value="<?php echo $sfl ?>">    <input type="hidden" name="stx" value="<?php echo $stx ?>">    <input type="hidden" name="spt" value="<?php echo $spt ?>">    <input type="hidden" name="sst" value="<?php echo $sst ?>">    <input type="hidden" name="sod" value="<?php echo $sod ?>">    <input type="hidden" name="page" value="<?php echo $page ?>">    <input type="hidden" name="sw" value=""> <div id="loadingImage"> <img src="<?php echo $board_skin_url;?>/img/loading.gif"/></div><!-- loading image --><div role="main" style="margin-left:5px">    <ul class="gall_ul tiles-wrap animated" id="wookmark1">        <?php for ($i=0; $i<count($list); $i++) {            if($i>0 && ($i % $bo_gallery_cols == 0))                $style = 'clear:both;';            else                $style = '';            if ($i == 0) $k = 0;            $k += 1;            if ($k % $bo_gallery_cols == 0) $style .= "margin:0 !important;";         ?> <li data-link="<?php echo $list[$i]['href']?>">            <!--<?php if ($is_checkbox) { ?>  <?php if ($list_href || $is_checkbox || $write_href || $page !=1) { ?>    <div class="bo_fx">        <?php if ($is_checkbox) { ?>        <ul class="btn_bo_adm">           <!-- <li><input type="submit" name="btn_submit" value="선택삭제" onclick="document.pressed=this.value"></li>            <li><input type="submit" name="btn_submit" value="선택복사" onclick="document.pressed=this.value"></li>            <li><input type="submit" name="btn_submit" value="선택이동" onclick="document.pressed=this.value"></li>-->        </ul>        <?php } ?>        <?php if ($list_href || $write_href || $page !=1) { ?>        <ul class="btn_bo_user">            <?php if ($list_href) { ?><li><a href="<?php echo $list_href ?>" class="btn_b01">View All List</a></li><?php } ?>            <?php if ($page !=1 && !$list_href) { ?><li><a href="<?php echo G5_BBS_URL.'/board.php?bo_table='.$board['bo_table'];?>" class="btn_b01">View All List</a></li><?php } ?>           <!-- <?php if ($write_href) { ?><li><a href="<?php echo $write_href ?>" class="btn_b02">글쓰기</a></li><?php } ?>-->        </ul>        <?php } ?>    </div>    <?php } ?>    </form></div> <script src="<?=$board_skin_url?>/wookmark.min.js"></script><script type="text/javascript"> $(document).ready(function() {  //사이드뷰 관련 함수  var qs_hide = false;      $('#wookmark1').on("click",".sv_member , .sv_guest",function() {   $(".sv").removeClass("qs_on");          $(this).closest(".sv_wrap").find(".sv").addClass("qs_on");      });  $('#wookmark1').on("mouseenter",".sv, .title",function(){   qs_hide = false;  });  $('#wookmark1').on("mouseleave", ".sv, .title",function(){   qs_hide = true;  });      $("#wookmark1").on("focusin",".sv a",function() {      qs_hide = false;  });    $("#wookmark1").on("focusout",".sv a",function() {      qs_hide = true;  });  $(document).click(function(){   if(qs_hide) {$(".sv").removeClass("qs_on");}  });    $.fn.hasScrollBar = function() {      return (this.prop("scrollHeight") == 0 && this.prop("clientHeight") == 0)              || (this.prop("scrollHeight") > this.prop("clientHeight"));  };  var uri = '<?=G5_BBS_URL.'/board.php?bo_table='.$bo_table.$qstr.'&amp;page=';?>';  var url = uri.replace(/&amp;/g,"&");  var page = <?=$page;?>;  var nextPage = page+1;  var totalPage = <?=$total_page;?>;  var wookmark1 = new Wookmark('#wookmark1' , {   outerOffset:0,   itemWidth:parseInt(<?=$board['bo_gallery_width'];?>)+10  });  //$('#wookmark1 li:not(.empty_list)').click(function(){  // var page = $(this).data('link');  // location.href =page;  //});  /* 다음페이지 불러오기 */  function callContents(page) {   if(nextPage > totalPage) {                                return page;                        }else {                                var npage=page;    page=page+1;                                $.ajax({                                        url:url+npage,                                        success:function(data) {                                                var result =$(data).find('#wookmark1').html();                                                $('#wookmark1').append(result);      $('.tiles-wrap').removeClass('wookmark-initialised');                                                var wookmark1 = new Wookmark('#wookmark1' , {                                                outerOffset:0,                                                itemWidth:parseInt(<?=$board['bo_gallery_width'];?>)+10                                                });      $('.tiles-wrap').addClass('wookmark-initialised');                                        },     beforeSend:function() {      $("#loadingImage").css("display","block");     },     complete:function() {      $("#loadingImage").css("display","none");     },     error:function(e) {      alert("통신 실패");      console.log(e);     }                                });    return page;                        }  }  /* init */  function addGallery() {  // console.log("next : "+nextPage +", total : "+totalPage+", scroll : "+$('html').hasScrollBar());   if( (nextPage > totalPage) || $('html').hasScrollBar() ) {    clearInterval(galleryInit);    $("#loadingImage").css("display","none");   }else {    nextPage=callContents(nextPage);    $("#loadingImage").css("display","block");   }  }  /* scrolling 후 다음페이지 불러오기 */  $(window).scroll(function() {   if($(window).scrollTop() == $(document).height() - $(window).height()){    nextPage=callContents(nextPage);   }  });  $("#loadingImage").css("display","block");  var galleryInit = setInterval(addGallery, 1000); });</script><?php if($is_checkbox) { ?><noscript><p>자바스크립트를 사용하지 않는 경우<br>별도의 확인 절차 없이 바로 선택삭제 처리하므로 주의하시기 바랍니다.</p></noscript><?php } ?><!-- 페이지 --><!-- <?php echo $write_pages;  ?> --><?php if ($is_checkbox) { ?><script>function all_checked(sw) {    var f = document.fboardlist;    for (var i=0; i<f.length; i++) {        if (f.elements[i].name == "chk_wr_id[]")            f.elements[i].checked = sw;    }}function fboardlist_submit(f) {    var chk_count = 0;    for (var i=0; i<f.length; i++) {        if (f.elements[i].name == "chk_wr_id[]" && f.elements[i].checked)            chk_count++;    }    if (!chk_count) {        alert(document.pressed + "할 게시물을 하나 이상 선택하세요.");        return false;    }    if(document.pressed == "선택복사") {        select_copy("copy");        return;    }    if(document.pressed == "선택이동") {        select_copy("move");        return;    }    if(document.pressed == "선택삭제") {        if (!confirm("Are you sure you want to delete the selected post?<br>(确定要删除选择的帖子吗？)\n\nOnce deleted it can not be recovered.<br>(一经删除将无法复原)\n\n\n"))            return false;        f.removeAttribute("target");        f.action = "./board_list_update.php";    }    return true;}// 선택한 게시물 복사 및 이동function select_copy(sw) {    var f = document.fboardlist;    if (sw == 'copy')        str = "복사";    else        str = "이동";    var sub_win = window.open("", "move", "left=50, top=50, width=500, height=550, scrollbars=1");    f.sw.value = sw;    f.target = "move";    f.action = "./move.php";    f.submit();}</script><?php } ?><!-- } 게시판 목록 끝 -->