function survolLangue(target){
	var cible = document.getElementById(target);
	var apparition = new OpacityTween(cible,Tween.regularEaseIn, 50, 100, 0.5);
	apparition.start();
}

function deSurvolLangue(target){
	var cible = document.getElementById(target);
	var disparition = new OpacityTween(cible,Tween.regularEaseIn, 100, 50, 0.5);
	disparition.start();
}

function changeLangue(id) {
	var xhr=null;
	if (window.XMLHttpRequest) 
		xhr = new XMLHttpRequest();
	else if (window.ActiveXObject)
		xhr = new ActiveXObject("Microsoft.XMLHTTP");
	
	xhr.onreadystatechange = function() {
		if(xhr.readyState == 4)
			window.location = xhr.responseText;
	};
	
	var url_courante = document.location;
	var donnees = "";
	donnees += "&id="+id;
	donnees += "&url="+url_courante;
	xhr.open("GET", chemin+"/action/changeLangue.php?id="+id+"&url="+url_courante, true);
	xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');
	xhr.send(donnees);
}