function afficher(idAChanger,donnees){ // pour remplacer le contenu du div contenu
	$(idAChanger).empty(); // on vide le div
	$(idAChanger).append(donnees); // on met dans le div le r괵ltat de la requete ajax
}

var Utf8 = {

	// public method for url encoding
	encode : function(string) {
		string = string.replace(/\r\n/g, "\n");
		var utftext = "";

		for(var n = 0; n < string.length; n++) {

			var c = string.charCodeAt(n);

			if(c < 128) {
				utftext += String.fromCharCode(c);
			} else if((c > 127) && (c < 2048)) {
				utftext += String.fromCharCode((c >> 6) | 192);
				utftext += String.fromCharCode((c & 63) | 128);
			} else {
				utftext += String.fromCharCode((c >> 12) | 224);
				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				utftext += String.fromCharCode((c & 63) | 128);
			}

		}

		return utftext;
	},
	// public method for url decoding
	decode : function(utftext) {
		var string = "";
		var i = 0;
		var c = c1 = c2 = 0;

		while(i < utftext.length) {
			c = utftext.charCodeAt(i);

			if(c < 128) {
				string += String.fromCharCode(c);
				i++;
			} else if((c > 191) && (c < 224)) {
				c2 = utftext.charCodeAt(i + 1);
				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				i += 2;
			} else {
				c2 = utftext.charCodeAt(i + 1);
				c3 = utftext.charCodeAt(i + 2);
				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				i += 3;
			}

		}

		return string;
	}
}