function getXhr(){
 var xhr = null; 
if(window.XMLHttpRequest) // Firefox et autres
xhr = new XMLHttpRequest(); 
else if(window.ActiveXObject){ // Internet Explorer 
try {
 xhr = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
xhr = new ActiveXObject("Microsoft.XMLHTTP");
}
}
else { // XMLHttpRequest non supporté par le navigateur 
 alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest..."); 
xhr = false; 
} 
return xhr
}

function go_login(){
var obj = document.getElementById("header");
obj.innerHTML = '<form class="s" name="form1" id="form1" onsubmit="login()">Pseudo: <input  class="input"  style="width: 200px; width: 150px;"  type="text"  name="pseudo" size="38"  /> Mot de passe: <input  class="input"  style="width: 200px; width: 150px;"  type="password"  name="pass" size="38"  /> <input type="button" name="Login" value="Connexion" onclick="login()"></form>';
}
function go_login2(id){
var obj = document.getElementById("header");
obj.innerHTML = '<form class="s" method="POST" action="login.php" id="search"><input type="hidden"  name="id"  value="'+id+'"> Pseudo: <input  class="input"  style="width: 200px; width: 150px;"  type="text"  name="pseudo" size="38"  /> Mot de passe: <input  class="input"  style="width: 200px; width: 150px;"  type="password"  name="pass" size="38"  /><input id="x" type="submit" value="Connexion" /></form>';
}
function go_login3(){
var obj = document.getElementById("header");
obj.innerHTML = '<form class="s" method="POST" action="login.php" id="search">Pseudo: <input  class="input"  style="width: 200px; width: 150px;"  type="text"  name="pseudo" size="38"  /> Mot de passe: <input  class="input"  style="width: 200px; width: 150px;"  type="password"  name="pass" size="38"  /><input id="x" type="submit" value="Connexion" /></form>';
}

function login(){
				var xhr = getXhr();
				var pseudo = document.form1.pseudo.value; 
				var pass = document.form1.pass.value; 
				
				xhr.onreadystatechange = function(){
					
					if(xhr.readyState == 4 && xhr.status == 200){
					document.getElementById('header').innerHTML = xhr.responseText;
					
					}
				}
				
				xhr.open("POST","login.php",false);
				xhr.setRequestHeader('Content-type','application/x-www-form-urlencoded');
				temp = "pseudo="+pseudo+"&pass="+pass;
				xhr.send(temp);
			}
			
function favorie(video_id){
				var xhr = getXhr();
				
				xhr.onreadystatechange = function(){
					
					if(xhr.readyState == 4 && xhr.status == 200){
					document.getElementById('favorie').innerHTML = xhr.responseText;
					
					}
				}
				
				xhr.open("POST","add_fav.php",false);
				xhr.setRequestHeader('Content-type','application/x-www-form-urlencoded');
				temp = "video_id="+video_id;
				xhr.send(temp);
			}
			
function del(video_id, id){
				var xhr = getXhr();
				
				xhr.onreadystatechange = function(){
					
					if(xhr.readyState == 4 && xhr.status == 200){
					document.getElementById('del_'+id).innerHTML = xhr.responseText;
					
					}
				}
				
				xhr.open("POST","del_fav.php",false);
				xhr.setRequestHeader('Content-type','application/x-www-form-urlencoded');
				temp = "video_id="+video_id;
				xhr.send(temp);
			}