===================================================================
--- original.js
+++ change.js
@@ -71,8 +71,11 @@
 var LettersGrid = Container.expand(function (columns, lines, assetName) {
 	var self = Container.call(this);
 	self.gridColumns = columns;
 	self.gridLines = lines;
+	var oneCell = new GridCell('', assetName); //Taille de reference
+	self.width = oneCell.cellSize * self.gridColumns;
+	self.height = oneCell.cellSize * self.gridLines;
 	self.clickable = true; //Indique si la grille est cliquable
 	self.cells = [];
 	self.emptyCells = []; //Liste des cellules vides
 	self.initializeGrid = function () {
@@ -81,8 +84,10 @@
 			for (var j = 0; j < self.gridColumns; j++) {
 				var cell = new GridCell('', assetName);
 				cell.x = j * cell.cellSize;
 				cell.y = i * cell.cellSize + cell.cellSize / 2;
+				//self.width += cell.cellSize;
+				//self.height += cell.cellSize;
 				self.addChild(cell);
 				self.cells[i][j] = cell;
 				cell.column = j;
 				cell.line = i;
@@ -93,8 +98,10 @@
 				cell.clickable = self.clickable;
 				self.emptyCells.push(cell);
 			}
 		}
+		//self.width = self.gridColumns * self.cells[0][0].cellSize;
+		//self.height = self.gridLines * self.cells[0][0].cellSize;
 	}; //Fin de la fonction initializeGrid
 	self.resetGrid = function () {
 		//Réinitialise la grille : remove all cells and repositionnement de la grille
 		for (var i = 0; i < self.gridLines; i++) {
@@ -315,12 +322,11 @@
 /**** 
 * Main zone foreground
 ****/ 
 var policeSize = 128;
-var oneCell = new LettersGrid(1, 1, 'cell'); //Taille de reference
 var mainGrid = game.addChild(new LettersGrid(6, 6, 'cell'));
 mainGrid.initializeGrid();
-mainGrid.x = mainGrid.columns * oneCell.width / 2;
+mainGrid.x = game.width / 2 - mainGrid.width / 2 + mainGrid.width / (mainGrid.gridColumns + 2);
 mainGrid.y = MainZone.height / 6;
 var wordGrid = null;
 initWordGrid();
 var lettersToAdd = []; //File d'attente des lettres à ajouter dans la lettersGrid
@@ -397,9 +403,9 @@
 function initWordGrid() {
 	//Initialise la grille des lettres formant le mot
 	wordGrid = game.addChild(new LettersGrid(0, 1, 'cellWord'));
 	wordGrid.initializeGrid();
-	wordGrid.x = (game.width - wordGrid.width) / 2 - wordGrid.height / 2;
+	wordGrid.x = (game.width - wordGrid.width) / 2;
 	wordGrid.y = ScoreZone.height + 300 + mainGrid.height + 200;
 } //Fin de la fonction initWordGrid
 //Fonction pickAndShakeSingleWord : permet de choisir un mot dans la liste des mots et de le mélanger
 function pickAndShakeSingleWord() {