<!-- Hidden Menu -->

var ie45,ns6,ns4,dom;

if (navigator.appName=="Microsoft Internet Explorer")

  ie45=parseInt(navigator.appVersion)>=4;

else if (navigator.appName=="Netscape"){

  ns6=parseInt(navigator.appVersion)>=5;

  ns4=parseInt(navigator.appVersion)<5;}

dom=ie45 || ns6;



function showhide(id) {

el = document.all ? document.all[id] : 

  dom ? document.getElementById(id) : 

  document.layers[id];

els = dom ? el.style : el;

if (dom){

  if (els.display == "none")

    els.display = "";

  else els.display = "none";

  }

else if (ns4){

  if (els.display == "show")

    els.display = "hide";

  else els.display = "show";

  }

}

<!-- // End -->

function openScript(url, width, height) {

        var Win = window.open(url,"openScript",'width=' + width + ',height=' + height + ',resizable=no,scrollbars=yes,menubar=no,status=no' );

}

function AboutVC()
{
	alert(" Author: " + " Luck NGuyen" + "\n\n" + " Website: Vnrelax.com" + "\n\n" + " Email: it.vietnam@yahoo.com");
}

<!-- Phong to va thu nho text -->
function ZoomIn(){
	fsize = txtBody.style.fontSize
	fsize = fsize.substring(0,2)
	fsize = parseInt(fsize)
	if(fsize<=13){
		fsize = fsize + 1
		txtBody.style.fontSize = fsize+"pt";
	}
}

function ZoomOut(){
	fsize = txtBody.style.fontSize
	fsize = fsize.substring(0,2)
	fsize = parseInt(fsize)
	if(fsize>=8){
		fsize = fsize - 1
		txtBody.style.fontSize = fsize+"pt";
	}
}

font_arr = Array("Arial","Tahoma","Times New Roman","Verdana")
font_i = 0

function ChangeFont(){
	font_i++;
	txtBody.style.fontFamily = font_arr[font_i]
	if(font_i==font_arr.length-1) font_i=-1
}

// -->

// -- Loader
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';
}
// End loader

<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->

	function getExtension(theImageName)
	{
		var theLength = theImageName.length;
		
		return theImageName.substr(theLength-3, 3);
	}