/*************************************************************************************************
* FF?? ????? ?? 'skc080304
*************************************************************************************************/
var stmnLEFT = 955; // ?????? ?? ?? 
var stmnGAP1 = 550; // ??? ????? ?? 
var stmnGAP2 = 550; // ???? ???? ??? ?? ??. ????? 0?? ?? 
var stmnBASE = 550; // ????? ?? ???? (????? ?? ??? ??? stmnGAP1? ?? ??? ??? ?? ??) 
var stmnActivateSpeed = 2; // ???? ???? ?? (??? ??? ?? ????) 
var stmnScrollSpeed = 0.3; // ????? ?? (??? ?? ???) 

//var stmnGAP1 = 68;        // ??? ????? ?? 
//var stmnGAP2 = 68;        // ???? ???? ??? ?? ??. ????? 0?? ?? 
//var stmnBASE = 250;        // ????? ?? ???? (????? ?? ??? ??? ptmnGAP1? ?? ??? ??? ?? ??) 
//var stmnActivateSpeed = 2; // ???? ???? ?? (??? ??? ?? ????) 
//var stmnScrollSpeed = 0.7; // ????? ?? (??? ?? ???) 

function addPx(val){
	return val+'px';
}

function removePx(str){
	str = str+'';
	var newStr = str.replace(/px/gi, '');
	return newStr;
}

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 RefreshtobBtn(){ 
	var stmnStartPoint, stmnEndPoint, stmnRefreshTimer; 

	stmnStartPoint = parseInt(removePx(document.getElementById('tobBtn').style.top), 10); 
	stmnEndPoint = window.document.documentElement.scrollTop + stmnGAP2; 

	stmnLimit = parseInt(window.document.documentElement.scrollHeight) - parseInt(document.getElementById('tobBtn').offsetHeight); 

	if (stmnEndPoint > stmnLimit) stmnEndPoint = stmnLimit; 
	if (stmnEndPoint < stmnGAP1) stmnEndPoint = stmnGAP1; 

	stmnRefreshTimer = stmnActivateSpeed; 

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

	stmnTimer = setTimeout ("RefreshtobBtn();", 1);
}

function ToggleAnimate() {
	if (!ANIMATE.checked) {
		RefreshtobBtn();
		SaveCookie("ANIMATE", "true", 300);
	} else {
		clearTimeout(stmnTimer);
		document.getElementById('tobBtn').style.top = addPx(removePx(stmnGAP1));
		SaveCookie("ANIMATE", "false", 300);
	}
}

function InitializetobBtn() {
/*
	if (ReadCookie("ANIMATE") == "false") { 
		ANIMATE.checked = true; 
		document.getElementById('tobBtn').style.top = document.documentElement.scrollTop + stmnGAP1; 
	} else { 
		ANIMATE.checked = false;
*/
		//alert(parseInt(document.documentElement.scrollTop));
		document.getElementById('tobBtn').style.top = addPx(removePx(stmnBASE)); 
		RefreshtobBtn(); 
//  }
}