var agt=navigator.userAgent.toLowerCase();
var is_major = parseInt(navigator.appVersion);
var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_ie3    = (is_ie && (is_major < 4));
var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
var is_ie4up  = (is_ie && (is_major >= 4));
var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);
var is_ie5down  = (is_ie && (is_ie3 || is_ie4 || is_ie5));
var is_ie5_5up =(is_ie && !is_ie3 && !is_ie4 && !is_ie5);
var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5);
var is_ie7    = (is_ie && (is_major == 4) && (agt.indexOf("msie 7.")!=-1) );
var is_ie7up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5 && !is_ie6);
var is_gecko = (agt.indexOf('gecko') != -1);

var hIncludes = null;
function includeScript(sURI)
{
  if (document.getElementsByTagName)
  {
	var cScripts = document.getElementsByTagName("script");
	if (!hIncludes)
    {
      hIncludes = {};
      for (var i=0,len=cScripts.length; i < len; i++)
        if (cScripts[i].src) hIncludes[cScripts[i].src] = true;
    }
    if (!hIncludes[sURI])
    {
      var oNew = document.createElement("script");
      oNew.type = "text/javascript";
      oNew.src = sURI;
      hIncludes[sURI]=true;
	  //if(val) {
	  //document.getElementsByTagName("head")[0].insertBefore(oNew,cScripts[0]);
	  //}else{
      	document.getElementsByTagName("head")[0].appendChild(oNew);
	  //}
    }
  }
}

/* The following code is copyright 2003 by Gavin Kistner, gavin@refinery.com
It is covered under the license viewable at
http://phrogz.net/JS/_ReuseLicense.txt */
function AttachEvent(obj,evt,fnc,useCapture){
	if (!useCapture) useCapture=false;
	if (obj.addEventListener){
		obj.addEventListener(evt,fnc,useCapture);
		return true;
	} else if (obj.attachEvent) return obj.attachEvent("on"+evt,fnc);
	else{
		MyAttachEvent(obj,evt,fnc);
		obj['on'+evt]=function(){ MyFireEvent(obj,evt) };
	}
}
function MyAttachEvent(obj,evt,fnc){
	if (!obj.myEvents) obj.myEvents={};
	if (!obj.myEvents[evt]) obj.myEvents[evt]=[];
	var evts = obj.myEvents[evt];
	evts[evts.length]=fnc;
}
function MyFireEvent(obj,evt){
	if (!obj || !obj.myEvents || !obj.myEvents[evt]) return;
	var evts = obj.myEvents[evt];
	for (var i=0,len=evts.length;i<len;i++) evts[i]();
}
function getElementbyClass(rootobj, classname){
	var temparray=new Array();
	var inc=0;
	var rootlength=rootobj.length;
	for (i=0; i<rootlength; i++){
	if (rootobj[i].className==classname) temparray[inc++]=rootobj[i];
	}
	return temparray;
}
function AddClass(obj,cName){ KillClass(obj,cName); return obj && (obj.className+=(obj.className.length>0?' ':'')+cName); }
function KillClass(obj,cName){ return obj && (obj.className=obj.className.replace(new RegExp("^"+cName+"\\b\\s*|\\s*\\b"+cName+"\\b",'g'),'')); }
function HasClass(obj,cName){ return (!obj || !obj.className)?false:(new RegExp("\\b"+cName+"\\b")).test(obj.className) }
function ShowHideById(id){
	//var display = document.getElementById(id).style.display;
	if(document.getElementById(id).style.display == 'none') document.getElementById(id).style.display = '';
	else document.getElementById(id).style.display = 'none';	
}
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
function openImage(vLink, vHeight, vWidth)

{

	var sLink = (typeof(vLink.href) == 'undefined') ? vLink : vLink.href;



	if (sLink == '')

	{

		return false;

	}



	winDef = 'status=no,resizable=no,scrollbars=no,toolbar=no,location=no,fullscreen=no,titlebar=yes,height='.concat(vHeight).concat(',').concat('width=').concat(vWidth).concat(',');

	winDef = winDef.concat('top=').concat((screen.height - vHeight)/2).concat(',');

	winDef = winDef.concat('left=').concat((screen.width - vWidth)/2);

	newwin = open('', '_blank', winDef);



	newwin.document.writeln('<title>Xem ảnh lớn</title><body topmargin="0" leftmargin="0" marginheight="0" marginwidth="0">');

	newwin.document.writeln('<a href="" onClick="window.close(); return false;"><img src="', sLink, '" alt="', 'Dong lai', '" border=0></a>');

	newwin.document.writeln('</body>');



	if (typeof(vLink.href) != 'undefined')

	{

		return false;

	}

}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}