/* - - - - - - - - - - - - - - - - - - - - - - -
Ajax Javascript
 - - - - - - - - - - - - - - - - - - - - - - - */
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;

var http=createRequestObject();
var objectId = '';
var loadok = 0;

function createRequestObject(htmlObjectId){
    var obj;
    var browser = navigator.appName;
    
    if(browser == "Microsoft Internet Explorer"){
        obj = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else{
        obj = new XMLHttpRequest();
    }
    return obj;    
}

function send_post(strurl, parameters,objId) {      
  objectId = objId;
  http.open('POST', strurl, true);
  http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  http.setRequestHeader("Content-length", parameters.length);
  http.setRequestHeader("Connection", "close");
  http.onreadystatechange = handleResponse;
  http.send(parameters);
}

function sendReq(serverFileName, variableNames, variableValues,objId) {
	var paramString = '';
	
	objectId = objId;
	
	variableNames = variableNames.split(',');
	variableValues = variableValues.split(',');
	
	for(i=0; i<variableNames.length; i++) {
		paramString += variableNames[i]+'='+variableValues[i]+'&';
	}
	paramString = paramString.substring(0, (paramString.length-1));
			
	if (paramString.length == 0) {
	   	http.open('get', serverFileName);
	}
	else {
		http.open('get', serverFileName+'?'+paramString);
	}
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function handleResponse() {
	
	if (http.readyState == 4) {
		responseText = http.responseText;
		getobj(objectId).innerHTML = responseText;
  } else {
		image_loading =DIR_IMAGE+'/loading.gif';				
		getobj(objectId).innerHTML = "<br><div align=center><img src='"+image_loading+"' border=0><br>&#272;ang l&#7845;y d&#7919; li&#7879;u ...</div>";
	}
		
}

function change_icon(imgDocID,url) {
document.images[imgDocID].src = url;
}  

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";
         }
  }
}

function getobj(id) {
el = document.all ? document.all[id] :   dom ? document.getElementById(id) :   document.layers[id];
return el;
}

function showobj(id) {
obj=getobj(id);
els = dom ? obj.style : obj;
 	if (dom){
	    els.display = "";
    } else if (ns4){
        els.display = "show";
  	}
}

function hideobj(id) {
obj=getobj(id);
els = dom ? obj.style : obj;
 	if (dom){
	    els.display = "none";
    } else if (ns4){
        els.display = "hide";
  	}
}

// khong the phong to cua so
function openPopUp(url, windowName, w, h, scrollbar) {
   var winl = (screen.width - w) / 2;
   var wint = (screen.height - h) / 2;
   winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scrollbar ;
   win = window.open(url, windowName, winprops);
   if (parseInt(navigator.appVersion) >= 4) { 
       	win.window.focus(); 
   } 
}

// co the phong to cua so
var win=null;
function NewWindow(mypage,myname,w,h,scroll,pos){
if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}
settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes';
win=window.open(mypage,myname,settings);}

//============================================================


function is_num(event,f){
	if (event.srcElement) {kc =  event.keyCode;} else {kc =  event.which;}
	if ((kc < 47 || kc > 57) && kc != 8 && kc != 0) return false;
	return true;
}

function submitDoc(formName) { 
  var obj;
  if (obj=findObj(formName)!=null) {
		findObj(formName).submit(); 
  }else {
		alert('The form you are attempting to submit called \'' + formName + '\' couldn\'t be found. Please make sure the submitDoc function has the correct id and name.');
	}
}


function findObj(n, d) {
  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=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function ToggleTextView(s, l, t, b)
{
 var $ = function (id) {return document.getElementById(id); };
 s=$(s); l=$(l); t=$(t); b=$(b);
 if (t) { t.detailView = !t.detailView; t.innerHTML=t.detailView?l.innerHTML:s.innerHTML; b.innerHTML=t.detailView?"[-]":"[+]"; }
}
function log_out(theURL){
		ht = document.getElementsByTagName("body");
		ht[0].style.filter = "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
		if (confirm('Do you want logout ? '))
		{
			
			ht[0].style.filter = "";
			window.location.href=theURL;
			return true;
		}
		else
		{
			ht[0].style.filter = "";
			return false;
		}
}


function do_sendmail(f) {
	key='f_email,lang';
	value =f.f_email.value + ',vn';
	url = ROOT+'ajax/ajax_tellfriend.php';
	sendReq(url,key ,value,'ext_tellfriend');
	return false;
}

function do_maillist(f,lang) {
	key='f_email,lang';
	value =f.f_email.value + ','+lang;
	url = ROOT+'ajax/ajax_maillist.php';
	sendReq(url,key ,value,'ext_maillist');
	return false;
}

/*------------- button -------------*/

var fsub=false;
var mobj;
var osrc="";
var mouseOvers = new Array();
var mouseOuts = new Array();
var detect = navigator.userAgent.toLowerCase();

function checkIt(string)
{
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}

function mouseGoesOver(fsub, mEvent) {
	if (checkIt("msie") != 0) { // use in IE
		if (fsub==true) {
			mobj.src=osrc;
			fsub=false;
		} else {
			this.src = mouseOvers[this.number].src;
		}
		osrc=event.srcElement.src;
		mobj=event.srcElement;
	}
	else {	// use in firefox
		if (fsub==true) {
			mobj.src=osrc;
			fsub=false;
		} else if (fsub=='')  {
			osrc=mEvent.target.src;
			mobj=mEvent.target;
		} else {
			this.src = mouseOvers[this.number].src;
		}
	}
}

function mouseGoesOut() {this.src = mouseOuts[this.number].src;	}

buttonHover = function() {
	var inputButton = document.getElementsByTagName('input');
	var imageImgs = document.getElementsByTagName('img');
	var images = new Array();
	for (var i=0; i<inputButton.length; i++) {images.push(inputButton[i]);}
	for (var i=0; i<imageImgs.length; i++) {images.push(imageImgs[i]);}
	
	for (var i=0; i<images.length; i++) 
	{
		
		if (images[i].src.indexOf('.gif') != -1){
			var imgsrc = images[i].src;
			var tmp=(imgsrc.substring(imgsrc.lastIndexOf('/') + 1)).substring(0,(imgsrc.substring(imgsrc.lastIndexOf('/') + 1)).lastIndexOf('.'));
			
			if ( tmp.indexOf('_') != -1) /* search all img have "_" */
			{
				var last_img =  tmp.substring(0,tmp.lastIndexOf('_'));
				if (tmp.substring(tmp.lastIndexOf('_')+1) == "n" )
				{
					images[i].onmouseover = mouseGoesOver;
					images[i].onmouseout = mouseGoesOut;
					mouseOuts[i] = new Image();
					mouseOuts[i].src = images[i].src;
					mouseOvers[i] = new Image();	
						
					var suffix = images[i].src.substring(images[i].src.lastIndexOf('.'));
					if (images[i].src.lastIndexOf('.') != -1) { mouseOvers[i].src = images[i].src.substring(0,images[i].src.lastIndexOf('_')) + "_o" + suffix;}
					images[i].number = i;
					
				}
			}
		}
		
	}
	
	// class button
	for (var i=0; i<inputButton.length; i++) 
	{
		if (inputButton[i].type=="submit" || inputButton[i].type=="button" || inputButton[i].type=="reset" ){
			inputButton[i].className = "button";
			inputButton[i].onmouseover=function() {
				this.className="buttonHover";
			}
			inputButton[i].onmouseout=function() {
				this.className="button";
			}
		}
	}

}