function addComment(type,id_type)
{
	var commentaire = document.getElementById('textarea_commentaire');
	if(commentaire.value.length<5 || commentaire.value.length>500)
	{
		alert("les commentaires sont limit&#233;s &#224; 500 caract&#233;res");
	}
	else
	{
		var Request = 'type='+type+'&id_type='+id_type+'&commentaire='+commentaire.value;
		var xhr;
		if(window.XMLHttpRequest) // Firefox
		xhr = new XMLHttpRequest();
		else if(window.ActiveXObject) // Internet Explorer
		xhr = new ActiveXObject("Microsoft.XMLHTTP");
		xhr.onreadystatechange = function() {
			if(xhr.readyState == 4 && xhr.status == 200) {
				var reponse = xhr.responseText;
				if(reponse=='ok')
				{
					setTimeout("location.reload(true)",500);
				}
				else
				{
					
				}
			}
		}
		var request = "../jax/addcomment.php";
		xhr.open("POST",request,true);
		xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
		xhr.send(Request);
	}
}