===================================================================
--- original.js
+++ change.js
@@ -222,9 +222,9 @@
 
 /**** 
 * Game Code
 ****/ 
-//var wordsMainListTest = ["AARDVARK", "ALBATROSS", "ALLIGATOR", "ALPACA", "ANT"]; //The real main list is at the end
+// 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.
@@ -252,33 +252,53 @@
 	* 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 wordsMainListTest = ["AARDVARK", "ALBATROSS", "ALLIGATOR", "ALPACA", "ANT"]; //The real main list is at the end
 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"];
 var planetesNsatellites = ["SUN", "MERCURY", "VENUS", "EARTH", "MOON", "MARS", "PHOBOS", "DEIMOS", "JUPITER", "IO", "EUROPA", "GANYMEDE", "CALLISTO", "SATURN", "TITAN", "MIMAS", "ENCELADUS", "TETHYS", "DIONE", "RHEA", "HYPERION", "LAPETUS", "PHOEBE", "URANUS", "PUCK", "MIRANDA", "ARIEL", "UMBRIEL", "TITANIA", "OBERON", "NEPTUNE", "TRITON", "PROTEUS", "NEREID", "PLUTO", "CHARON"];
 var scoreTest = 0; // Define scoreTest variable
 var score = 0;
+/**** 
+* Game zones and backgrounds
+****/ 
 var ScoreZone = {
 	x: 0,
 	y: 0,
 	width: game.width,
-	height: 200
+	height: 200 * game.height / 2732
 };
+var MainZone = {
+	x: 0,
+	y: ScoreZone.height,
+	width: game.width,
+	height: game.height - 2 * ScoreZone.height
+};
+var OptionsZone = {
+	x: 0,
+	y: game.height - ScoreZone.height,
+	width: game.width,
+	height: 200 * game.height / 2732
+};
 var backGroundScoreZone = LK.getAsset('ScoreZoneBackGround', {
 	x: ScoreZone.x,
 	y: ScoreZone.y,
 	width: ScoreZone.width,
 	height: ScoreZone.height
 });
 game.addChild(backGroundScoreZone);
-var OptionsZone = {
-	x: 0,
-	y: game.height - 200,
-	width: game.width,
-	height: 200
-};
+setBackGroundImage('BackGroundPlanetesNSatellites');
+var backGroundOptionsZone = LK.getAsset('OptionsZoneBackGround', {
+	x: OptionsZone.x,
+	y: OptionsZone.y,
+	width: OptionsZone.width,
+	height: OptionsZone.height
+});
+game.addChild(backGroundOptionsZone);
+/**** 
+* Score
+****/ 
 var scoreTestText = new Text2('0', {
 	size: 30,
 	fill: "#ffff00",
 	anchorX: 0.5,
@@ -291,27 +311,25 @@
 	anchorX: 0.5,
 	anchorY: 0
 });
 LK.gui.top.addChild(scoreText);
+/**** 
+* Main zone foreground
+****/ 
 var policeSize = 128;
-var lettersGrid = new LettersGrid(1, 1, 'cell');
-lettersGrid.clickable = false;
-lettersGrid.initializeGrid();
-lettersGrid.x = (game.width - lettersGrid.width) / 2 + lettersGrid.height / 2;
-lettersGrid.y = ScoreZone.height + lettersGrid.height / 2;
-setMainWordsList(planetesNsatellites);
-setBackGroundImage('BackGroundPlanetesNSatellites');
-setValidateButton('buttonValidate');
+var oneCell = new LettersGrid(1, 1, 'cell'); //Taille de reference
 var mainGrid = game.addChild(new LettersGrid(6, 6, 'cell'));
 mainGrid.initializeGrid();
-mainGrid.x = (game.width - mainGrid.width) / 2 + lettersGrid.height / 2;
-mainGrid.y = ScoreZone.height + 2 * lettersGrid.height;
+mainGrid.x = mainGrid.columns * oneCell.width / 2;
+mainGrid.y = MainZone.height / 6;
 var wordGrid = null;
 initWordGrid();
 var lettersToAdd = []; //File d'attente des lettres à ajouter dans la lettersGrid
 var isGameStarted = false;
 var isMGRefillrequired = false; //Indique si le remplissage de la grille principale est nécessaire
 var isWordValid = false; //Indique si le mot formé est valide
+setMainWordsList(planetesNsatellites);
+setValidateButton('buttonValidate');
 /**** 
 * Functions
 ****/ 
 function updateScoreTest(nouveauScore) {
@@ -326,12 +344,12 @@
 } //Fin de la fonction setMainWordsList
 //Fonction setBackGroundImage : permet de définir l'image de fond du jeu
 function setBackGroundImage(image) {
 	backGroundImage = LK.getAsset(image, {
-		x: 0,
-		y: ScoreZone.height,
-		width: game.width,
-		height: game.height - OptionsZone.height
+		x: MainZone.x,
+		y: MainZone.y,
+		width: MainZone.width,
+		height: MainZone.height
 	});
 	game.addChild(backGroundImage);
 } //Fin de la fonction setBackGroundImage
 //Fonction onClickValidateButton : permet de valider le mot formé par le joueur
@@ -369,10 +387,10 @@
 		fill: "#00FF00",
 		text: {
 			size: 50,
 			fill: "#000000"
-		}
-		//onClick: onClickValidateButton
+		},
+		onClick: onClickValidateButton
 	});
 	game.addChild(validateButton);
 } //Fin de la fonction setValidateButton
 //Fonction initWordGrid : permet d'initialiser la grille des lettres formant le mot