var xVersion='4.0',xOp7Up,xOp6Dn,xIE4Up,xIE4,xIE5,xNN4,xUA=navigator.userAgent.toLowerCase();
if(window.opera){
	var i=xUA.indexOf('opera');
	if(i!=-1){
		var v=parseInt(xUA.charAt(i+6));
		xOp7Up=v>=7;
		xOp6Dn=v<7;
	}
}else if(navigator.vendor!='KDE' && document.all && xUA.indexOf('msie')!=-1){
	xIE4Up=parseFloat(navigator.appVersion)>=4;
	xIE4=xUA.indexOf('msie 4')!=-1;
	xIE5=xUA.indexOf('msie 5')!=-1;
}else if(document.layers){
	xNN4=true;
}
xMac=xUA.indexOf('mac')!=-1;
//bat dau cac function
function xAddEventListener(e,eT,eL,cap){
	if(!(e=xGetElementById(e))) 
		return;
	eT=eT.toLowerCase();
	if((!xIE4Up && !xOp7Up) && e==window) {
		if(eT=='resize') { 
			window.xPCW=xClientWidth(); 
			window.xPCH=xClientHeight(); 
			window.xREL=eL; 
			xResizeEvent(); 
			return; 
		}
		if(eT=='scroll') { 
			window.xPSL=xScrollLeft(); 
			window.xPST=xScrollTop(); 
			window.xSEL=eL; 
			xScrollEvent(); 
			return; 
		}
	}
	var eh='e.on'+eT+'=eL';
	if(e.addEventListener) 
		e.addEventListener(eT,eL,cap);
	else if(e.attachEvent) 
		e.attachEvent('on'+eT,eL);
	else eval(eh);
}
function xResizeEvent(){
	if (window.xREL) 
		setTimeout('xResizeEvent()', 250);
	var cw = xClientWidth(), ch = xClientHeight();
	if (window.xPCW != cw || window.xPCH != ch) { 
		window.xPCW = cw; 
		window.xPCH = ch; 
		if (window.xREL) 
			window.xREL(); 
	}
}
function xScrollEvent(){
	if (window.xSEL) 
		setTimeout('xScrollEvent()', 250);
	var sl = xScrollLeft(), st = xScrollTop();
	if (window.xPSL != sl || window.xPST != st) { 
		window.xPSL = sl; 
		window.xPST = st; 
		if (window.xSEL) 
			window.xSEL(); 
	}
}
function xClientHeight(){
	var h=0;
	if(xOp6Dn) 
		h=window.innerHeight;
	else if(document.compatMode == 'CSS1Compat' && !window.opera && document.documentElement && document.documentElement.clientHeight)
		h=document.documentElement.clientHeight;
	else if(document.body && document.body.clientHeight)
		h=document.body.clientHeight;
	else if(xDef(window.innerWidth,window.innerHeight,document.width)) {
		h=window.innerHeight;
		if(document.width>window.innerWidth) 
			h-=16;
	}
	return h;
}
function xClientWidth(){
	var w=0;
	if(xOp6Dn) 
		w=window.innerWidth;
	else if(document.compatMode == 'CSS1Compat' && !window.opera && document.documentElement && document.documentElement.clientWidth)
		w=document.documentElement.clientWidth
	else if(document.body && document.body.clientWidth)
		w=document.body.clientWidth;
	else if(xDef(window.innerWidth,window.innerHeight,document.height)) {
		w=window.innerWidth;
		if(document.height>window.innerHeight) 
			w-=16;
	}return w;
}
function xDef(){
	for(var i=0; i<arguments.length; ++i){
		if(typeof(arguments[i])=='undefined') 
			return false;
	}
	return true;
}
function xGetComputedStyle(oEle, sProp, bInt){
	var s, p = 'undefined';
	var dv = document.defaultView;
	if(dv && dv.getComputedStyle){
		s = dv.getComputedStyle(oEle,'');
		if (s) 
			p = s.getPropertyValue(sProp);
	}
	else if(oEle.currentStyle) {
		var a = sProp.split('-');
		sProp = a[0];
		for (var i=1; i<a.length; ++i) {
			c = a[i].charAt(0);
			sProp += a[i].replace(c, c.toUpperCase());
		}   
		p = oEle.currentStyle[sProp];
	}
	else 
		return null;
	return bInt ? (parseInt(p) || 0) : p;
}
function xGetElementById(e){
	if(typeof(e)!='string') 
		return e;
	if(document.getElementById) 
		e=document.getElementById(e);
	else if(document.all) 
		e=document.all[e];
	else 
		e=null;
	return e;
}
function xHeight(e,h){
	if(!(e=xGetElementById(e))) 
		return 0;
	if (xNum(h)) {
		if (h<=0) 
			h = 100;
		else 
			h=Math.round(h);
	}
	else 
		h=-1;
	var css=xDef(e.style);
	if (e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
		h = xClientHeight();
	}
	else if(css && xDef(e.offsetHeight) && xStr(e.style.height)) {
		if(h>=0) {
			var pt=0,pb=0,bt=0,bb=0;
			if (document.compatMode=='CSS1Compat') {
				var gcs = xGetComputedStyle;
				pt=gcs(e,'padding-top',1);
				if (pt !== null) {
					pb=gcs(e,'padding-bottom',1);
					bt=gcs(e,'border-top-width',1);
					bb=gcs(e,'border-bottom-width',1);
				}
				else if(xDef(e.offsetHeight,e.style.height)){
					e.style.height=h+'px';
					pt=e.offsetHeight-h;
				}
			}
			h-=(pt+pb+bt+bb);
			if(isNaN(h)||h<0) 
				return;
			else 
				e.style.height=h+'px';
		}
		h=e.offsetHeight;
	}
	else if(css && xDef(e.style.pixelHeight)) {
		if(h>=0) 
			e.style.pixelHeight=h;
		h=e.style.pixelHeight;
	}
	return h;
}
function xLeft(e, iX){
	if(!(e=xGetElementById(e))) 
		return 0;
	var css=xDef(e.style);
	if (css && xStr(e.style.left)) {
		if(xNum(iX)) 
			e.style.left=iX+'px';
		else {
			iX=parseInt(e.style.left);
			if(isNaN(iX)) 
				iX=0;
		}
	}else if(css && xDef(e.style.pixelLeft)) {
		if(xNum(iX)) 
			e.style.pixelLeft=iX;
		else 
			iX=e.style.pixelLeft;
	}
	return iX;
}
function xMoveTo(e,x,y){
	xLeft(e,x);
	xTop(e,y);
}
function xNum(){
	for(var i=0; i<arguments.length; ++i){
		if(isNaN(arguments[i]) || typeof(arguments[i])!='number') 
			return false;
	}
	return true;
}
function xPageX(e){
	if (!(e=xGetElementById(e))) 
		return 0;
	var x = 0;
	while (e) {
		if (xDef(e.offsetLeft)) 
			x += e.offsetLeft;
		e = xDef(e.offsetParent) ? e.offsetParent : null;
	}
	return x;
}
function xPageY(e){
	if (!(e=xGetElementById(e))) 
		return 0;
	var y = 0;
	while (e) {
		if (xDef(e.offsetTop)) 
			y += e.offsetTop;
		e = xDef(e.offsetParent) ? e.offsetParent : null;
	}
	return y;
}
function xScrollLeft(e, bWin){
	var offset=0;
	if (!xDef(e) || bWin || e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
		var w = window;
		if (bWin && e) 
			w = e;
		if(w.document.documentElement && w.document.documentElement.scrollLeft) 
			offset=w.document.documentElement.scrollLeft;
		else if(w.document.body && xDef(w.document.body.scrollLeft)) 
			offset=w.document.body.scrollLeft;
	}
	else {
		e = xGetElementById(e);
		if (e && xNum(e.scrollLeft)) 
			offset = e.scrollLeft;
	}
	return offset;
}
function xScrollTop(e, bWin){
	var offset=0;
	if (!xDef(e) || bWin || e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
		var w = window;
		if (bWin && e) w = e;
		if(w.document.documentElement && w.document.documentElement.scrollTop) 
			offset=w.document.documentElement.scrollTop;
		else if(w.document.body && xDef(w.document.body.scrollTop)) 
			offset=w.document.body.scrollTop;
	}
	else {
		e = xGetElementById(e);
		if (e && xNum(e.scrollTop)) 
			offset = e.scrollTop;
	}
	return offset;
}
function xShow(e) {
	return xVisibility(e,1);
}
function xSlideTo(e, x, y, uTime){
	if (!(e=xGetElementById(e))){
		return;
	}
	if (!e.timeout) 
		e.timeout = 25;
	e.xTarget = x; 
	e.yTarget = y; 
	e.slideTime = uTime; 
	e.stop = false;
	e.yA = e.yTarget - xTop(e); 
	e.xA = e.xTarget - xLeft(e); 
	if (e.slideLinear) 
		e.B = 1/e.slideTime;
	else 
		e.B = Math.PI / (2 * e.slideTime); 
	e.yD = xTop(e); 
	e.xD = xLeft(e); 
	var d = new Date(); 
	e.C = d.getTime();
	if (!e.moving) _xSlideTo(e);
}
function _xSlideTo(e){
	if (!(e=xGetElementById(e))) 
		return;
	var now, s, t, newY, newX;
	now = new Date();
	t = now.getTime() - e.C;
	if (e.stop) { 
		e.moving = false; 
	}
	else if (t < e.slideTime) {
		setTimeout("_xSlideTo('"+e.id+"')", e.timeout);
		if (e.slideLinear) 
			s = e.B * t;
		else 
			s = Math.sin(e.B * t);
		newX = Math.round(e.xA * s + e.xD);
		newY = Math.round(e.yA * s + e.yD);
		xMoveTo(e, newX, newY);
		e.moving = true;
	}  
	else {
		xMoveTo(e, e.xTarget, e.yTarget);
		e.moving = false;
	}  
}
function xStr(s){
	for(var i=0; i<arguments.length; ++i){
		if(typeof(arguments[i])!='string') 
			return false;
	}
	return true;
}
function xTop(e, iY){
	if(!(e=xGetElementById(e))) 
		return 0;
	var css=xDef(e.style);
	if(css && xStr(e.style.top)) {
		if(xNum(iY)) 
			e.style.top=iY+'px';
		else {
			iY=parseInt(e.style.top);
			if(isNaN(iY)) 
				iY=0;
		}
	}
	else if(css && xDef(e.style.pixelTop)) {
		if(xNum(iY)) 
			e.style.pixelTop=iY;
		else 
			iY=e.style.pixelTop;
	}
	return iY;
}
function xVisibility(e, bShow){
	if(!(e=xGetElementById(e))) 
		return null;
	if(e.style && xDef(e.style.visibility)) {
		if (xDef(bShow)) 
			e.style.visibility = bShow ? 'visible' : 'hidden';
		return e.style.visibility;
	}
	return null;
}
function xWidth(e,w){
	if(!(e=xGetElementById(e))) 
		return 0;
	if (xNum(w)) {
		if (w<0) 
			w = 0;
		else w=Math.round(w);
	}
	else 
		w=-1;
	var 
		css=xDef(e.style);
	if (e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
		w = xClientWidth();
	}
	else if(css && xDef(e.offsetWidth) && xStr(e.style.width)) {
		if(w>=0) {
			var pl=0,pr=0,bl=0,br=0;
			if (document.compatMode=='CSS1Compat') {
				var gcs = xGetComputedStyle;
				pl=gcs(e,'padding-left',1);
				if (pl !== null) {
					pr=gcs(e,'padding-right',1);
					bl=gcs(e,'border-left-width',1);
					br=gcs(e,'border-right-width',1);
				}
				else if(xDef(e.offsetWidth,e.style.width)){
					e.style.width=w+'px';
					pl=e.offsetWidth-w;
				}
			}
			w-=(pl+pr+bl+br);
			if(isNaN(w)||w<0) 
				return;
			else 
				e.style.width=w+'px';
		}
		w=e.offsetWidth;
	}
	else if(css && xDef(e.style.pixelWidth)) {
		if(w>=0) 
			e.style.pixelWidth=w;
		w=e.style.pixelWidth;
	}
	return w;
}