===================================================================
--- original.js
+++ change.js
@@ -280,8 +280,9 @@
 
 /**** 
 * Game Code
 ****/ 
+// Button class for creating buttons in the game
 /**** 
 * GAME DESCRIPTION:
 * Game Principle:
 	* -There is a board filled with letters, where the player selects letters from a partially filled grid.
@@ -309,9 +310,8 @@
 	* If the word is not valid, the letters forming the word are returned to their original position in the grid.
 	* A new word appears randomly within the grid to empty spaces.
 	* If there is no more space in the grid, the game is over.
 ****/ 
-// Button class for creating buttons in the game
 var backGroundsList = ["BackGroundPlanetesNSatellites", "BackGroundUSAStates", "BackGroundEuropeanCapitales"]; //Liste des assets de fond
 var mainListsList = [planetesNsatellites, usaStates, europeanCapitales]; //Liste des listes de mots principales
 var usaStates = ["ALABAMA", "ALASKA", "ARIZONA", "ARKANSAS", "CALIFORNIA", "COLORADO", "CONNECTICUT", "DELAWARE", "FLORIDA", "GEORGIA", "HAWAII", "IDAHO", "ILLINOIS", "INDIANA", "IOWA", "KANSAS", "KENTUCKY", "LOUISIANA", "MAINE", "MARYLAND", "MASSACHUSETTS", "MICHIGAN", "MINNESOTA", "MISSISSIPPI", "MISSOURI", "MONTANA", "NEBRASKA", "NEVADA", "NEW-HAMPSHIRE", "NEW-JERSEY", "NEW-MEXICO", "NEW-YORK", "NORTH-CAROLINA", "NORTH-DAKOTA", "OHIO", "OKLAHOMA", "OREGON", "PENNSYLVANIA", "RHODE-ISLAND", "SOUTH-CAROLINA", "SOUTH-DAKOTA", "TENNESSEE", "TEXAS", "UTAH", "VERMONT", "VIRGINIA", "WASHINGTON", "WEST-VIRGINIA", "WISCONSIN", "WYOMING"];
 var europeanCapitales = ["AMSTERDAM", "ANDORRA-LA-VELLA", "ANKARA", "ATHENS", "BELGRADE", "BERLIN", "BERN", "BRATISLAVA", "BRUSSELS", "BUCHAREST", "BUDAPEST", "CHISINAU", "COPENHAGEN", "DUBLIN", "HELSINKI", "KIEV", "LISBON", "LJUBLJANA", "LONDON", "LUXEMBOURG", "MADRID", "MINSK", "MONACO", "MOSCOW", "NICOSIA", "OSLO", "PARIS", "PODGORICA", "PRAGUE", "REYKJAVIK", "RIGA", "ROME", "SAN-MARINO", "SARAJEVO", "SKOPJE", "SOFIA", "STOCKHOLM", "TALLINN", "TBILISI", "TIRANA", "VADUZ", "VALLETTA", "VIENNA", "VILNIUS", "WARSAW", "ZAGREB"];
@@ -394,12 +394,32 @@
 var animatingImageOn = false; //Drapeau indiquant qu'une image est a scrollscaller
 var imagesToScrollRescale = []; //Liste des images a scrollscaller
 //initGameThema(planetesNsatellites, 'BackGroundPlanetesNSatellites');
 //initGameThema(usaStates, 'BackGroundUSAStates');
-initGameThema(europeanCapitales, 'BackGroundEuropeanCapitales');
+//initGameThema(europeanCapitales, 'BackGroundEuropeanCapitales');
+displayminiBackGrounds();
 /**** 
 * Functions
 ****/ 
+//Fonction displayminiBackGrounds : permet d'afficher les miniatures des fonds et d'y associer un événement de click
+//Les assets de fond sont stockés dans la liste backGroundsList
+function displayminiBackGrounds() {
+	var backGrounds = [];
+	for (var i = 0; i < backGroundsList.length; i++) {
+		backGrounds[i] = LK.getAsset(backGroundsList[i], {
+			x: 100 * i,
+			y: 0,
+			width: 100,
+			height: 100
+		});
+		backGrounds[i].on('down', function () {
+			if (!isGameStarted) {
+				initGameThema(mainListsList[i], backGroundsList[i]);
+			}
+		});
+		game.addChild(backGrounds[i]);
+	}
+} //Fin de la fonction displayminiBackGrounds
 //Fonction initGameThema : permet d'initialiser le thème du jeu (liste des mots et image de fond)
 function initGameThema(mainList, backGround) {
 	isGameStarted = false;
 	isMGRefillrequired = false;
@@ -569,9 +589,9 @@
 		mainGrid.colorWordCells(word, "#" + randomColor);
 		LK.setTimeout(function () {
 			mainGrid.colorWordCells(word, "#000000");
 			scrollCostCoins(clueButtonWord.x, clueButtonWord.y, word.length, costForWord);
-		}, 3000);
+		}, 5000);
 	}
 } //Fin de la fonction onClickClueButtonWord
 //Fonction setClueButtonWord : permet de définir le bouton d'indice focus word
 function setClueButtonWord(asset) {
@@ -861,9 +881,9 @@
 	scrollRescaleImages();
 	//Recherche de la lettre cliquée dans la mainGrid et ajout de la lettre à la liste des lettres formant le mot
 	for (var i = 0; i < mainGrid.gridLines; i++) {
 		for (var j = 0; j < mainGrid.gridColumns; j++) {
-			if (mainGrid.cells[i][j].isClicked) {
+			if (mainGrid.cells[i] && mainGrid.cells[i][j] && mainGrid.cells[i][j].isClicked) {
 				var newCell = addCellLetterToWord(mainGrid.cells[i][j].letter);
 				if (newCell) {
 					newCell.columnFrom = j;
 					newCell.lineFrom = i;