function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function chk_field(writeForm){
	if(writeForm.writer.value.length<1){
		alert("À̸§À» ÀÔ·ÂÇϼ¼¿ä.");
		writeForm.writer.focus();
		return false;
	}
	if(writeForm.email.value.length < 1 ){
		alert("E-MAILÀ» ÀÔ·ÂÇϼ¼¿ä");
		writeForm.email.focus();
		return false;
	}
	if(writeForm.title.value.length<1){
		alert("Á¦¸ñÀ» ÀÔ·ÂÇϼ¼¿ä.");
		writeForm.title.focus();
		return false;
	}
	if(writeForm.contents.value.length<1){
		alert("³»¿ëÀ» ÀÔ·ÂÇϼ¼¿ä.");
		writeForm.contents.focus();
		return false;
	}
}

var ie = (document.all) ? true : false;        // ÀÎÅÍ³Ý ÀͽºÇ÷η¯Àΰ¡?
var imgBuff = new Array();                     // ·Ñ¿À¹ö À̹ÌÁö¸¦ ÀúÀåÇϱâ À§ÇÑ ¹öÆÛ

/**
* class imgEntry()
* ¿øº», ·Ñ¿À¹ö, ¼±Åýà »ç¿ëÇÒ À̹ÌÁö¸¦ °¡Áö°í ÀÖ´Â °´Ã¼
*
* @param origin
* @param over
* @param select
*/
function imgEntry(origin,over,select) {
        this.origin = new Image();
        this.over = new Image();
        this.select = new Image();

        this.origin.src = origin;
        this.over.src = over;
        this.select.src = select;
}

/**
* String _makeTempID()
* À̹ÌÁöÀÇ Àӽà ¾ÆÀ̵ð·Î ¾²ÀÏ ³­¼ö À̸§À» ¹ß»ý½ÃÄÑÁÜ
*
* @return String
*/
function _makeTempID() {
        return "IMG" + Math.ceil(Math.random() * 10000000);
}

/**
* void doOver()
* À̹ÌÁö¿¡ ·Ñ¿À¹öµÉ¶§ÀÇ À̺¥Æ® Çڵ鷯
*/
function doOver() {
        var el = event.srcElement;
        if (el.selected == true) return;
        el.src = imgBuff[el.id].over.src;
}

/**
* void doOut()
* À̹ÌÁö¿¡¼­ ·Ñ¾Æ¿ôµÉ¶§ÀÇ À̺¥Æ® Çڵ鷯
*/
function doOut() {
        var el = event.srcElement;
        if (el.selected == true) return;
        el.src = imgBuff[el.id].origin.src;
}

/**
* void doClick()
* À̹ÌÁö¸¦ Ŭ¸¯ÇÒ¶§ÀÇ À̺¥Æ® Çڵ鷯
*/
function doClick() {
        var el = event.srcElement;
        if (el.getAttribute("TOGGLE") != null) {
                el.selected = !(el.selected);
                el.src = (el.selected) ? imgBuff[el.id].select.src : imgBuff[el.id].origin.src;
        } else if (el.getAttribute("GROUP") != null) {
                var same = el.getAttribute("GROUP");
                var imgs = document.all.tags("IMG");
                var layers = document.all.tags("DIV");
                for (var i=0; i<imgs.length; i++) {
                        if (imgs[i].getAttribute("GROUP") == same) {
                                imgs[i].selected = false;
                                imgs[i].src = imgBuff[imgs[i].id].origin.src;
                                if(imgs[i].getAttribute("LAYER") != null) {
                                        layname = imgs[i].getAttribute("LAYER");
                                        layers[layname].style.visibility = "hidden";
                                }
                        }
                }
                el.selected = true;
                el.src = imgBuff[el.id].select.src;
                layname = imgs[el.id].getAttribute("LAYER");
                if(layname != null) layers[layname].style.visibility = "visible";
        } else {
                el.selected = true;
                el.src = imgBuff[el.id].select.src;
        }
}

/**
* void init_rollover()
* À̹ÌÁö ·Ñ¿À¹ö¸¦ À§ÇÑ Áغñ
*/
function init_rollover() {
        if (!ie) return;        // ÀͽºÇ÷η¯°¡ ¾Æ´Ï¸é ºüÁ®³ª°¡±â

        var img;
        var imgs = document.all.tags("IMG");
        for (var i=0; i<imgs.length; i++) {
                if (imgs[i].oversrc) {
                        if (!imgs[i].id) imgs[i].id = _makeTempID();
                        img = new imgEntry(imgs[i].src, imgs[i].oversrc, (imgs[i].selsrc) ? imgs[i].selsrc : imgs[i].oversrc);
                        imgBuff[imgs[i].id] = img;
                        if (imgs[i].getAttribute("DEFAULT") != null) {
                                imgs[i].selected = true;
                                imgs[i].src = imgBuff[imgs[i].id].select.src;
                        }

                        imgs[i].onmouseover = doOver;
                        imgs[i].onmouseout = doOut;
                        imgs[i].onclick = doClick;
                }
        }
}

/**
* void selectImg
* À̹ÌÁö¸¦ ¼±Åà »óÅ·Π¸¸µé¾îÁÜ
*
* @param String id
*/
function selectImg(id) {
        var target = document.getElementById(id);
        if (target.getAttribute("OVERSRC") != null) {
                target.selected = true;
                target.src = imgBuff[id].select.src;
        }
}