// Hieu ung mouse over
var oldClr;
var oldFontColor;
function overchangclr(obj,bgcolor,FontColor)
{	//openPage('http://www.vnn.vn')
	oldClr=obj.style.backgroundColor;
	oldFontColor=obj.style.color;
	obj.style.backgroundColor=bgcolor;	
	obj.style.color=FontColor;
	obj.style.cursor='hand';
	return true;	
}
function outchangclr(obj)
{
	obj.style.backgroundColor=oldClr;
	obj.style.color=oldFontColor;
	return true;	
}
//Mở một web page
function openPage(url,vtarget)
{
var sFeature="width=" + screen.width + ", height=" + screen.height + ", resizable=no, location=no, status=no, scrollbars=yes, top=0, left=0, menubar=no";
window.open(url,vtarget,sFeature);
return true;
}
function openPageExt(url,vheight,vwidth,vtarget,vscroll)
{
var sFeature="width=" + vwidth + ", height=" + vheight + ", top=" + (screen.height-vheight)/2 + ", left=" + (screen.width-vwidth)/2 +  ", resizable=no, location=no, status=no, scrollbars=" + vscroll + ",menubar=no";
//alert(sFeature);
window.open(url,vtarget,sFeature);
return true;
}
//Mở một web dialog page
function openDialog(url,agmSend,closewindow)
{
var sFeature="dialogHeight: 630px; dialogWidth: 760px; edge: Sunken; center: Yes; help: No; resizable: No; status: No;";
window.showModalDialog(url,agmSend,sFeature);
if (closewindow)
	{
		window.close();
		}
return true;
}
function openDialogExt(url,agmSend,height,width)
{
var sFeature="dialogHeight: " + height +  "px; dialogWidth: " + width +  "px; edge: Sunken; center: Yes; help: No; resizable: No; status: No;";
window.showModalDialog(url,agmSend,sFeature);
return true;
}
//--------------------------------
//Đóng một cửa sổ S_alert là thông báo đóng cửa sổ, direcClose là đóng trực tiếp hay đóng gián tiếp(có hỏi xem có đóng thật không)
function CloseWindow(S_alert,direcClose)
{
if (direcClose)
{
alert(S_alert);
window.close();
return true;
}
if (S_alert.length!='')
{
	var bConfirm=window.confirm(S_alert);	
	if (bConfirm)
	   {
		window.close();
		}		
}
else
	{
	window.close();
	}
return true;
}
//-------------------------------------
// Dong ho dien tu
var timerID = null;
var timerRunning = false;
var id,pause=0,position=0;

function stopclock (){
        if(timerRunning)
                clearTimeout(timerID);
        timerRunning = false;
}

function showtime () {
        var now = new Date();
        var hours = now.getHours();
        var minutes = now.getMinutes();
        var seconds = now.getSeconds()
        var timeValue = "" + ((hours >12) ? hours -12 :hours)
        timeValue += ((minutes < 10) ? ":0" : ":") + minutes
        timeValue += ((seconds < 10) ? ":0" : ":") + seconds
        timeValue += (hours >= 12) ? " PM" : " AM"
        document.clock.face.value =timeValue;
        timerID = setTimeout("showtime()",1000);
        timerRunning = true;
}
function startclock () {
        stopclock();
        showtime();
}
//------------------------------------ dong ho dien tu

/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/

var offsetfrommouse=[15,25]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=0; //duration in seconds image should remain visible. 0 for always.

var defaultimageheight = 40;	// maximum image size.
var defaultimagewidth = 40;	// maximum image size.

var timer;

var t_id = setInterval(animate,20);
var pos=0;
var dir=2;
var len=0;

function animate()
{
var elem = document.getElementById('progress');
if(elem != null) {
if (pos==0) len += dir;
if (len>32 || pos>79) pos += dir;
if (pos>79) len -= dir;
if (pos>79 && len==0) pos=0;
elem.style.left = pos;
elem.style.width = len;
}
}

function remove_loading() {
this.clearInterval(t_id);
var targelem = document.getElementById('loader_container');
targelem.style.display='none';
targelem.style.visibility='hidden';
var t_id = setInterval(animate,60);
}


function gettrailobj(){
if (document.getElementById)
return document.getElementById("preview_div").style
}

function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("preview_div")
}

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

function hidetrail(){	
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-500px"
	clearTimeout(timer);
}

function showtrail(imagename,title,width,height){
	i = imagename
	t = title
	w = width
	h = height
	timer = setTimeout("show('"+i+"',t,w,h);",200);
}

function show(imagename,title,width,height){
 
  var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - offsetfrommouse[0]
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)

	if( (navigator.userAgent.indexOf("Konqueror")==-1  || navigator.userAgent.indexOf("Firefox")!=-1 || (navigator.userAgent.indexOf("Opera")==-1 && navigator.appVersion.indexOf("MSIE")!=-1)) && (docwidth>650 && docheight>500)) {
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';
			
		width+=30
		height+=55
		defaultimageheight = height
		defaultimagewidth = width
	
		document.onmousemove=followmouse; 

		//style="width:'+  width +'px;height:'+ height +'px"
		
		newHTML = '<div class="border_preview" style="width:'+  width +'px;"><div id="loader_container"><div id="loader"><div align="center">Loading photo...</div><div id="loader_bg"><div id="progress"></div></div></div></div>';
		newHTML = newHTML + '<p class="title_h2">' + title + '</p>'
		
    newHTML = newHTML + '<div class="preview_temp_load"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0"><span style="height: 200px; width: 0px; display: inline-block;"></span></div>';
		newHTML = newHTML + '</div>'; 
		
		//alert(newHTML);
		
		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 ){
			//newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0"></iframe>';
			// width="'+width+'" height="'+height+'"
		}		

		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="block";
		
	}
}

function followmouse(e){

	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]

	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)

	if (typeof e != "undefined"){
		if (docwidth - e.pageX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = e.pageX - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < defaultimageheight + 2*offsetfrommouse[1]){
			ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (defaultimageheight + 2*offsetfrommouse[1])){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

	gettrailobj().left=(xcoord)+"px"
	gettrailobj().top=(ycoord)+"px"
}