var stmnLEFT = 915; // ¿ÞÂÊ ¿©¹é
var stmnGAP1 = 435; // À§ÂÊ ¿©¹é
var stmnGAP2 = 0; // ½ºÅ©·Ñ½Ã ºê¶ó¿ìÀú À§ÂÊ°ú ¶³¾îÁö´Â °Å¸®
var stmnBASE = 435; // ½ºÅ©·Ñ ½ÃÀÛÀ§Ä¡
var stmnActivateSpeed = 200;
var stmnScrollSpeed = 10;

var stmnTimer;

function ReadCookie(name)
{
var label = name + "=";
var labelLen = label.length;
var cLen = document.cookie.length;
var i = 0;

while (i < cLen) {
                var j = i + labelLen;

                if (document.cookie.substring(i, j) == label) {
                                var cEnd = document.cookie.indexOf(";", j);
                                if (cEnd == -1) cEnd = document.cookie.length;

                                return unescape(document.cookie.substring(j, cEnd));
                }

                i++;
}

return "";
}

function SaveCookie(name, value, expire)
{
var eDate = new Date();
eDate.setDate(eDate.getDate() + expire);
document.cookie = name + "=" + value + "; expires=" +  eDate.toGMTString()+ "; path=/";
}

function RefreshTopButton()
{
var stmnStartPoint, stmnEndPoint, stmnRefreshTimer;

stmnStartPoint = parseInt(TOPBUTTON.style.top, 10);
stmnEndPoint = document.body.scrollTop + document.body.clientHeight - "123"; // ¾Æ·¡ÂÊ À§Ä¡ ¹× ¿©¹éÁ¶Á¤
if (stmnEndPoint < stmnGAP1) stmnEndPoint = stmnGAP1;

stmnRefreshTimer = stmnActivateSpeed;

if ( stmnStartPoint != stmnEndPoint ) {
                stmnScrollAmount = Math.ceil( Math.abs( stmnEndPoint - stmnStartPoint ) / 15 );
                TOPBUTTON.style.top = parseInt(TOPBUTTON.style.top, 10) + ( ( stmnEndPoint<stmnStartPoint ) ? -stmnScrollAmount : stmnScrollAmount );
                stmnRefreshTimer = stmnScrollSpeed;
}

stmnTimer = setTimeout ("RefreshTopButton();", stmnRefreshTimer);
}

function ToggleAnimate()
{
if (ANIMATE.checked) {
                RefreshTopButton();
                SaveCookie("ANIMATE", "true", 300);
}
else {
                clearTimeout(stmnTimer);
                TOPBUTTON.style.top = stmnGAP1;
                SaveCookie("ANIMATE", "false", 300);
}
}

function InitializeTopButton()
{
TOPBUTTON.style.left = stmnLEFT;

         if (ReadCookie("ANIMATE") == "false") {
                ANIMATE.checked = false;
                TOPBUTTON.style.top = document.body.scrollTop + stmnGAP1;
}
else {
                ANIMATE.checked = true;
                TOPBUTTON.style.top = document.body.scrollTop + stmnBASE;
                RefreshTopButton();
}
}


/*-------------------------------------*/
var defaultHeight=308;

var bodyHeight = scrollobjHeight = 0;

function get_objectTop(obj){
	if (obj.offsetParent == document.body) return obj.offsetTop;
	else return obj.offsetTop + get_objectTop(obj.offsetParent);
}
function scrollBanner()
{
	if ( document.all ) window.attachEvent("onload", initSlide); // IE °æ¿ì
	else window.addEventListener("load", initSlide, false); // FF(¸ðÁú¶ó) °æ¿ì
}

function initSlide()
{
	var scroll = document.getElementById('scroll');
	var scrollTop = get_objectTop(document.getElementById('pos_scroll'));
	scroll.style.top = document.body.scrollTop + scrollTop;
	bodyHeight = document.body.scrollHeight;
	scrollobjHeight = scroll.clientHeight;
	movingSlide();
}

function movingSlide()
{
	var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;
	var scroll = document.getElementById('scroll');
	var scrollTop = get_objectTop(document.getElementById('pos_scroll'));

	yMenuFrom  = parseInt (scroll.style.top, 10);
	yMenuTo    = document.body.scrollTop+defaultHeight + 10;
	if(yMenuTo<scrollTop) yMenuTo = scrollTop;
	timeoutNextCheck = 500;
	
	if (yMenuFrom != yMenuTo) {
		yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 10);
		if (yMenuTo < yMenuFrom) yOffset = -yOffset;
		scroll.style.top = parseInt (scroll.style.top, 10) + yOffset;
		timeoutNextCheck = 10;
	}
	if (scroll.style.pixelTop > bodyHeight - scrollobjHeight) scroll.style.top = bodyHeight - scrollobjHeight;
	
	setTimeout ("movingSlide()", timeoutNextCheck);
}