// Kiểm tra tính hợp lệ của email
function isEmail(s)
	{
	var str=s;
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
	if (filter.test(str))
		{
		return (true);
		}
	return (false);
}
// Mở một của sổ mới
function new_window(url,width, height){
		window.open (url, "new_window", "width="+ width + ", height="+ height +", resizable=1,scrollbars=yes");
	}
function viewsign(id){
		window.open ("viewsign.php?id="+id, "new_window", "width=350,height=300,resizable=1,scrollbars=yes");
	}
function openLarge(URL,W,H){
		hWindow=window.open("popup_image.php?"+URL,"Large","toolbar=no,width="+W+",height="+H+",status=no,scrollbars=no,resize=no,menubars=no");
 }
 //Highlight image script- By Dynamic Drive

function makevisible(cur,which){
strength=(which==0)? 0.6 : 1

if (cur.style.MozOpacity)
cur.style.MozOpacity=strength
else if (cur.filters)
cur.filters.alpha.opacity=strength*100
}
var menuwidth='120px' //default menu width
//var menubgimage='url(images/bg_menu_left.jpg)'
//background-image:url(images/bg_menuleft.jpg)
var menubgcolor='#FFFFFF;'  //menu bgcolor
var disappeardelay=200  //menu disappear speed onMouseout (in miliseconds)
var hidemenu_onclick="yes" //hide menu when user clicks within menu?

/////No further editting needed

var ie4=document.all
var ns6=document.getElementById&&!document.all

if (ie4||ns6)
document.write('<div id="dropmenudiv" style="visibility:hidden;width:'+menuwidth+';background-color:'+menubgcolor+'" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}


function showhide(obj, e, visible, hidden, menuwidth){
if (ie4||ns6)
dropmenuobj.style.left=dropmenuobj.style.top="-500px"
if (menuwidth!=""){
dropmenuobj.widthobj=dropmenuobj.style
dropmenuobj.widthobj.width=menuwidth
}
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
obj.visibility=visible
else if (e.type=="click")
obj.visibility=hidden
}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move up?
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either?
edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
}

function populatemenu(what){
if (ie4||ns6)
dropmenuobj.innerHTML=what.join("")
}


function dropdownmenu(obj, e, menucontents, menuwidth){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
clearhidemenu()
dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
populatemenu(menucontents)

if (ie4||ns6){
showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)

dropmenuobj.x=getposOffset(obj, "left")
dropmenuobj.y=getposOffset(obj, "top")
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
}

return clickreturnvalue()
}

function clickreturnvalue(){
if (ie4||ns6) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie4&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function hidemenu(e){
if (typeof dropmenuobj!="undefined"){
if (ie4||ns6)
dropmenuobj.style.visibility="hidden"
}
}

function delayhidemenu(){
if (ie4||ns6)
delayhide=setTimeout("hidemenu()",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}

if (hidemenu_onclick=="yes")
document.onclick=hidemenu

/* end menu */

var slideTime = 2000;
var floatAtBottom = false;

function pepsi_floating_init(){
	xMoveTo('rightBanner', 887 - (800-screen.width), 0);

	winOnResize(); // set initial position
	xAddEventListener(window, 'resize', winOnResize, false);
	xAddEventListener(window, 'scroll', winOnScroll, false);
}
function winOnResize(){
	checkScreenWidth();
	winOnScroll(); // initial slide
}
function winOnScroll(){
	var y = xScrollTop();
	if (floatAtBottom){y += xClientHeight() - xHeight('leftBanner');}
	if( screen.width <= 800 ){
		xSlideTo('leftBanner', (screen.width - (780-757) - 772)/2, y, slideTime);
		xSlideTo('rightBanner', (screen.width - (800-777) + 707)/2-120, y, slideTime);
	}else{
		xSlideTo('leftBanner', (screen.width - (800-777) - 772)/2-114, y, slideTime);
		xSlideTo('rightBanner', (screen.width - (800-777) + 707)/2+6, y, slideTime);
	}
}
function checkScreenWidth(){
	if( screen.width <= 800){
		document.getElementById('leftBanner').style.display = 'none';
	}
	if(screen.width < 800){
		document.getElementById('rightBanner').style.display = 'none';
	}
}