function connexion(email, pwd)
{


        var request = GXmlHttp.create();
		var url = "get_sql.php?req=connect&email="+email+"&pwd="+pwd;
        request.open("GET", url , false);
 		request.send(null);

 
        if (request.readyState == 4) 
		{
       
          var xmlDoc = GXml.parse(request.responseText);
          var res = xmlDoc.documentElement.getElementsByTagName("b");

		 if(res[0]== null)
		 {
		 	alert('Login ou mot de passe incorrect!');
	
		 }
		 else
		 {
    		pageTracker._trackEvent('Connexion', 'Se connecter',email);
        window.location.reload() ;

		}  
		  
		}
		  

}	

function deconnexion()
{

    var request = GXmlHttp.create();
		var url = "get_sql.php?req=deconnect";
    request.open("GET", url , false);
 		request.send(null);
 		
 		if (request.readyState == 4) 
		{
          window.location.reload() ;
    }
}