if (typeof(COMMON_JS) == 'undefined') { // 한번만 실행

    var COMMON_JS = true;



    // 전역 변수

    var errmsg = "";

    var errfld;



    // 필드 검사

    function check_field(fld, msg) 

    {

        if ((fld.value = trim(fld.value)) == "") 			   

            error_field(fld, msg);

        else

            clear_field(fld);

        return;

    }



    // 필드 오류 표시

    function error_field(fld, msg) 

    {

        if (msg != "")

            errmsg += msg + "\n";

        if (!errfld) errfld = fld;

        fld.style.background = "#BDDEF7";

    }



    // 필드를 깨끗하게

    function clear_field(fld) 

    {

        fld.style.background = "#FFFFFF";

    }



    function trim(s)

    {

        var t = "";

        var from_pos = to_pos = 0;



        for (i=0; i<s.length; i++)

        {

            if (s.charAt(i) == ' ')

                continue;

            else 

            {

                from_pos = i;

                break;

            }

        }



        for (i=s.length; i>=0; i--)

        {

            if (s.charAt(i-1) == ' ')

                continue;

            else 

            {

                to_pos = i;

                break;

            }

        }	



        t = s.substring(from_pos, to_pos);

        //				alert(from_pos + ',' + to_pos + ',' + t+'.');

        return t;

    }



    // 자바스크립트로 PHP의 number_format 흉내를 냄

    // 숫자에 , 를 출력

    function number_format(data) 

    {

        

        var tmp = '';

        var number = '';

        var cutlen = 3;

        var comma = ',';

        var i;

       

        len = data.length;

        mod = (len % cutlen);

        k = cutlen - mod;

        for (i=0; i<data.length; i++) 

        {

            number = number + data.charAt(i);

            

            if (i < data.length - 1) 

            {

                k++;

                if ((k % cutlen) == 0) 

                {

                    number = number + comma;

                    k = 0;

                }

            }

        }



        return number;

    }



    // 새 창

    function popup_window(url, winname, opt)

    {

        window.open(url, winname, opt);

    }





    // 폼메일 창

    function popup_formmail(url)

    {

        opt = 'scrollbars=yes,width=417,height=385,top=10,left=20';

        popup_window(url, "wformmail", opt);

    }



    // , 를 없앤다.

    function no_comma(data)

    {

        var tmp = '';

        var comma = ',';

        var i;



        for (i=0; i<data.length; i++)

        {

            if (data.charAt(i) != comma)

                tmp += data.charAt(i);

        }

        return tmp;

    }



    // 삭제 검사 확인

    function del(href) 

    {

        if(confirm("한번 삭제한 자료는 복구할 방법이 없습니다.\n\n정말 삭제하시겠습니까?")) 

            document.location.href = href;

    }



    // 쿠키 입력

    function set_cookie(name, value, expirehours, domain) 

    {

        var today = new Date();

        today.setTime(today.getTime() + (60*60*1000*expirehours));

        document.cookie = name + "=" + escape( value ) + "; path=/; expires=" + today.toGMTString() + ";";

        if (domain) {

            document.cookie += "domain=" + domain + ";";

        }

    }



    // 쿠키 얻음

    function get_cookie(name) 

    {

        var find_sw = false;

        var start, end;

        var i = 0;



        for (i=0; i<= document.cookie.length; i++)

        {

            start = i;

            end = start + name.length;



            if(document.cookie.substring(start, end) == name) 

            {

                find_sw = true

                break

            }

        }



        if (find_sw == true) 

        {

            start = end + 1;

            end = document.cookie.indexOf(";", start);



            if(end < start)

                end = document.cookie.length;



            return document.cookie.substring(start, end);

        }

        return "";

    }



    // 쿠키 지움

    function delete_cookie(name) 

    {

        var today = new Date();



        today.setTime(today.getTime() - 1);

        var value = get_cookie(name);

        if(value != "")

            document.cookie = name + "=" + value + "; path=/; expires=" + today.toGMTString();

    }



    // 이미지의 크기에 따라 새창의 크기가 변경됩니다.

    // zzzz님께서 알려주셨습니다. 2005/04/12

    function image_window(img)

    {

        var w = img.tmp_width; 

        var h = img.tmp_height; 

        var winl = (screen.width-w)/2; 

        var wint = (screen.height-h)/3; 



        if (w >= screen.width) { 

            winl = 0; 

            h = (parseInt)(w * (h / w)); 

        } 



        if (h >= screen.height) { 

            wint = 0; 

            w = (parseInt)(h * (w / h)); 

        } 



        var js_url = "<script language='JavaScript1.2'> \n"; 

            js_url += "<!-- \n"; 

            js_url += "var ie=document.all; \n"; 

            js_url += "var nn6=document.getElementById&&!document.all; \n"; 

            js_url += "var isdrag=false; \n"; 

            js_url += "var x,y; \n"; 

            js_url += "var dobj; \n"; 

            js_url += "function movemouse(e) \n"; 

            js_url += "{ \n"; 

            js_url += "  if (isdrag) \n"; 

            js_url += "  { \n"; 

            js_url += "    dobj.style.left = nn6 ? tx + e.clientX - x : tx + event.clientX - x; \n"; 

            js_url += "    dobj.style.top  = nn6 ? ty + e.clientY - y : ty + event.clientY - y; \n"; 

            js_url += "    return false; \n"; 

            js_url += "  } \n"; 

            js_url += "} \n"; 

            js_url += "function selectmouse(e) \n"; 

            js_url += "{ \n"; 

            js_url += "  var fobj      = nn6 ? e.target : event.srcElement; \n"; 

            js_url += "  var topelement = nn6 ? 'HTML' : 'BODY'; \n"; 

            js_url += "  while (fobj.tagName != topelement && fobj.className != 'dragme') \n"; 

            js_url += "  { \n"; 

            js_url += "    fobj = nn6 ? fobj.parentNode : fobj.parentElement; \n"; 

            js_url += "  } \n"; 

            js_url += "  if (fobj.className=='dragme') \n"; 

            js_url += "  { \n"; 

            js_url += "    isdrag = true; \n"; 

            js_url += "    dobj = fobj; \n"; 

            js_url += "    tx = parseInt(dobj.style.left+0); \n"; 

            js_url += "    ty = parseInt(dobj.style.top+0); \n"; 

            js_url += "    x = nn6 ? e.clientX : event.clientX; \n"; 

            js_url += "    y = nn6 ? e.clientY : event.clientY; \n"; 

            js_url += "    document.onmousemove=movemouse; \n"; 

            js_url += "    return false; \n"; 

            js_url += "  } \n"; 

            js_url += "} \n"; 

            js_url += "document.onmousedown=selectmouse; \n"; 

            js_url += "document.onmouseup=new Function('isdrag=false'); \n"; 

            js_url += "//--> \n"; 

            js_url += "</"+"script> \n"; 



        var settings;



        if (g4_is_gecko) {

            settings  ='width='+(w+10)+','; 

            settings +='height='+(h+10)+','; 

        } else {

            settings  ='width='+w+','; 

            settings +='height='+h+','; 

        }

        settings +='top='+wint+','; 

        settings +='left='+winl+','; 

        settings +='scrollbars=no,'; 

        settings +='resizable=yes,'; 

        settings +='status=no'; 





        win=window.open("","image_window",settings); 

        win.document.open(); 

        win.document.write ("<html><head> \n<meta http-equiv='imagetoolbar' CONTENT='no'> \n<meta http-equiv='content-type' content='text/html; charset="+g4_charset+"'>\n"); 

        var size = "이미지 사이즈 : "+w+" x "+h;

        win.document.write ("<title>"+size+"</title> \n"); 

        if(w >= screen.width || h >= screen.height) { 

            win.document.write (js_url); 

            var click = "ondblclick='window.close();' style='cursor:move' title=' "+size+" \n\n 이미지 사이즈가 화면보다 큽니다. \n 왼쪽 버튼을 클릭한 후 마우스를 움직여서 보세요. \n\n 더블 클릭하면 닫혀요. '"; 

        } 

        else 

            var click = "onclick='window.close();' style='cursor:pointer' title=' "+size+" \n\n 클릭하면 닫혀요. '"; 

        win.document.write ("<style>.dragme{position:relative;}</style> \n"); 

        win.document.write ("</head> \n\n"); 

        win.document.write ("<body leftmargin=0 topmargin=0 bgcolor=#dddddd style='cursor:arrow;'> \n"); 

        win.document.write ("<table width=100% height=100% cellpadding=0 cellspacing=0><tr><td align=center valign=middle><img src='"+img.src+"' width='"+w+"' height='"+h+"' border=0 class='dragme' "+click+"></td></tr></table>");

        win.document.write ("</body></html>"); 

        win.document.close(); 



        if(parseInt(navigator.appVersion) >= 4){win.window.focus();} 

    }



    // a 태그에서 onclick 이벤트를 사용하지 않기 위해

    function win_open(url, name, option)

    {

        var popup = window.open(url, name, option);

        popup.focus();

    }



    // 우편번호 창

    function win_zip(frm_name, frm_zip1, frm_zip2, frm_addr1, frm_addr2)

    {

        url = g4_path + "/" + g4_bbs + "/zip.php?frm_name="+frm_name+"&frm_zip1="+frm_zip1+"&frm_zip2="+frm_zip2+"&frm_addr1="+frm_addr1+"&frm_addr2="+frm_addr2;

        win_open(url, "winZip", "left=50,top=50,width=616,height=460,scrollbars=1");

    }



    // 쪽지 창

    function win_memo(url)

    {

        if (!url)

            url = g4_path + "/" + g4_bbs + "/memo.php";

        win_open(url, "winMemo", "left=50,top=50,width=620,height=460,scrollbars=1");

    }



    // 포인트 창

    function win_point(url)

    {

        win_open(g4_path + "/" + g4_bbs + "/point.php", "winPoint", "left=20, top=20, width=616, height=635, scrollbars=1");

    }



    // 스크랩 창

    function win_scrap(url)

    {

        if (!url)

            url = g4_path + "/" + g4_bbs + "/scrap.php";

        win_open(url, "scrap", "left=20, top=20, width=616, height=500, scrollbars=1");

    }



    // 패스워드 분실 창

    function win_password_forget()

    {

        win_open(g4_path + "/" + g4_bbs + "/password_forget.php", 'winPasswordForget', 'left=50, top=50, width=616, height=500, scrollbars=1');

    }



    // 코멘트 창

    function win_comment(url)

    {

        win_open(url, "winComment", "left=50, top=50, width=800, height=600, scrollbars=1");

    }



    // 폼메일 창

    function win_formmail(mb_id, name, email)

    {

		if (g4_charset.toLowerCase() == 'euc-kr')

	        win_open(g4_path+"/" + g4_bbs + "/formmail.php?mb_id="+mb_id+"&name="+name+"&email="+email, "winFormmail", "left=50, top=50, width=600, height=500, scrollbars=0");

		else

	        win_open(g4_path+"/" + g4_bbs + "/formmail.php?mb_id="+mb_id+"&name="+encodeURIComponent(name)+"&email="+email, "winFormmail", "left=50, top=50, width=600, height=560, scrollbars=0");

    }



    // 달력 창

    function win_calendar(fld, cur_date, delimiter, opt)

    {

        if (!opt)

            opt = "left=50, top=50, width=240, height=230, scrollbars=0,status=0,resizable=0";

        win_open(g4_path+"/" + g4_bbs + "/calendar.php?fld="+fld+"&cur_date="+cur_date+"&delimiter="+delimiter, "winCalendar", opt);

    }



    // 설문조사 창

    function win_poll(url)

    {

        if (!url)

            url = "";

        win_open(url, "winPoll", "left=50, top=50, width=616, height=500, scrollbars=1");

    }



    // 자기소개 창

    function win_profile(mb_id)

    {

        win_open(g4_path+"/" + g4_bbs + "/profile.php?mb_id="+mb_id, 'winProfile', 'left=50,top=50,width=620,height=510,scrollbars=1');

    }



    var last_id = null;

    function menu(id)

    {

        if (id != last_id)

        {

            if (last_id != null)

                document.getElementById(last_id).style.display = "none";

            document.getElementById(id).style.display = "block";

            last_id = id;

        }

        else

        {

            document.getElementById(id).style.display = "none";

            last_id = null;

        }

    }



    function textarea_decrease(id, row)

    {

        if (document.getElementById(id).rows - row > 0)

            document.getElementById(id).rows -= row;

    }



    function textarea_original(id, row)

    {

        document.getElementById(id).rows = row;

    }



    function textarea_increase(id, row)

    {

        document.getElementById(id).rows += row;

    }



    // 글숫자 검사

    function check_byte(content, target)

    {

        var i = 0;

        var cnt = 0;

        var ch = '';

        var cont = document.getElementById(content).value;



        for (i=0; i<cont.length; i++) {

            ch = cont.charAt(i);

            if (escape(ch).length > 4) {

                cnt += 2;

            } else {

                cnt += 1;

            }

        }

        // 숫자를 출력

        document.getElementById(target).innerHTML = cnt;



        return cnt;

    }



    // 브라우저에서 오브젝트의 왼쪽 좌표

    function get_left_pos(obj)

    {

        var parentObj = null;

        var clientObj = obj;

        //var left = obj.offsetLeft + document.body.clientLeft;

        var left = obj.offsetLeft;



        while((parentObj=clientObj.offsetParent) != null)

        {

            left = left + parentObj.offsetLeft;

            clientObj = parentObj;

        }



        return left;

    }



    // 브라우저에서 오브젝트의 상단 좌표

    function get_top_pos(obj)

    {

        var parentObj = null;

        var clientObj = obj;

        //var top = obj.offsetTop + document.body.clientTop;

        var top = obj.offsetTop;



        while((parentObj=clientObj.offsetParent) != null)

        {

            top = top + parentObj.offsetTop;

            clientObj = parentObj;

        }



        return top;

    }



    function flash_movie(src, ids, width, height, wmode)

    {

        var wh = "";

        if (parseInt(width) && parseInt(height)) 

            wh = " width='"+width+"' height='"+height+"' ";

        return "<object classid='clsid:d27cdb6e-ae6d-11cf-96b8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0' "+wh+" id="+ids+"><param name=wmode value="+wmode+"><param name=movie value="+src+"><param name=quality value=high><embed src="+src+" quality=high wmode="+wmode+" type='application/x-shockwave-flash' pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?p1_prod_version=shockwaveflash' "+wh+"></embed></object>";

    }



    function obj_movie(src, ids, width, height, autostart)

    {

        var wh = "";

        if (parseInt(width) && parseInt(height)) 

            wh = " width='"+width+"' height='"+height+"' ";

        if (!autostart) autostart = false;

        return "<embed src='"+src+"' "+wh+" autostart='"+autostart+"'></embed>";

    }



    function doc_write(cont)

    {

        document.write(cont);

    }

}