function chImg(img) {
	imgName = img.src;
	if( imgName.indexOf("on.") > -1 ) {
		var re = /on\./g;
		img.src = imgName.replace(re,"off.");
	} else {
		var re = /off\./g;
		img.src = imgName.replace(re,"on.");
	}
}



function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
/**
 * form.field를 매개변수로 하여 
 * 해당하는 필드에 체크된 radio버튼 혹은 checkbox가 있다면 true를
 * 없다면 false를 반환한다.
 * @param {Object} field_obj
 */
function hasChecked(field_obj) {
    if (field_obj.length > 1) {
        for (var idx = 0; idx < field_obj.length; idx++) {
            if (field_obj[idx].checked) return true;
        }
    } else {
        if (field_obj.checked) return true;
    }
    return false;
}
function hasCheckedValue(field_obj) {
    if (field_obj.length > 1) {
        for (var idx = 0; idx < field_obj.length; idx++) {
            if (field_obj[idx].checked) return field_obj[idx].value;
        }
    } else {
        if (field_obj.checked) return field_obj[idx].value;
    }
    return field_obj[idx].value;
}
function openWindow(url, name, width, height)   {
    var top  = screen.height / 2 - height / 2 - 50;
    var left = screen.width / 2 - width / 2 ;
    var win =
        open(url,
            name,
            'width=' + width + ', height=' + height + ', top=' + top +
            ', left=' + left + ', resizable=no, status=yes, toolbar=no, menubar=no, scrollbars=auto');
    win.focus();
    return win;
}

/**
 * top display
 */

function displaySubMenu(id_name,targer_menu_seq,total) {	
    var target_menu = id_name+targer_menu_seq;
    for(i=1 ; i<=total ; i++) {
		if (document.getElementById(id_name + i)) {
			document.getElementById(id_name + i).style.display = "none";
		}
    }
	if (document.getElementById(target_menu)) {
		document.getElementById(target_menu).style.display = "block";
	}
}

function change_subMenuImage(id_name,targer_menu_seq,total) {
    var target_menu = id_name+targer_menu_seq;
    for(i=1 ; i<=total ; i++) {
        var re = /on\./g;
        imgName = document.getElementById(id_name+i).src;
        document.getElementById(id_name+i).src = imgName.replace(re,"off.");
    }
    imgName = document.getElementById(target_menu).src;
    var re = /off\./g;
	document.getElementById(target_menu).src = imgName.replace(re,"on.");
}

function setCookie( name, value, expiredays )  {
	var todayDate = new Date(); 
	todayDate.setDate( todayDate.getDate() + expiredays ); 
	document.cookie = name + "=" + escape( value ) + "; path=/; expires=" + todayDate.toGMTString() + ";" 
}

function getCookie(name) {
	var Found = false 
	var start, end 
	var i = 0 
	while(i <= document.cookie.length) { 
		start = i 
		end = start + name.length 
		if(document.cookie.substring(start, end) == name) { 
			Found = true 
			break 
		} 
		i++ 
	} 

	if(Found == true) { 
		start = end + 1 
		end = document.cookie.indexOf(";", start) 
			
		if(end < start) 
			end = document.cookie.length 
		
		return document.cookie.substring(start, end) 
	} 

	return 0;

}

function deleteCookie (strName){

    var objExpireDate = new Date();

    objExpireDate.setDate(objExpireDate.getDate() - 1);
	
    document.cookie = strName + "=;expires=" + objExpireDate.toGMTString();

}

var font_size = 100;

function jsZoom(param)
{
    
    if(document.getElementById('content_area').style.fontSize==null||document.getElementById('content_area').style.fontSize=="") font_size = 100;

    if(param=="in")
        font_size = font_size + 20;
    else
        font_size = font_size - 20;

    if (font_size > 200) {
		alert("최대크기입니다.");
		font_size = 200;
	}      

    if(font_size < 60){
		alert("최소크기입니다.");
		font_size = 60;
	} 
     
    document.getElementById('content_area').style.fontSize = font_size +"%";
	
   
}

/* popup open */
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

/*
 * mouse position
 */
function getPosition(e) {
    e = e || window.event;
    var cursor = {x:0, y:0};
    if (e.pageX || e.pageY) {
        cursor.x = e.pageX;
        cursor.y = e.pageY;
    } 
    else {
        var de = document.documentElement;
        var b = document.body;
        cursor.x = e.clientX + 
            (de.scrollLeft || b.scrollLeft) - (de.clientLeft || 0);
        cursor.y = e.clientY + 
            (de.scrollTop || b.scrollTop) - (de.clientTop || 0);
    }
    return cursor;
}