Index: typo3/sysext/rtehtmlarea/class.tx_rtehtmlarea_base.php
===================================================================
--- typo3/sysext/rtehtmlarea/class.tx_rtehtmlarea_base.php	(révision 10507)
+++ typo3/sysext/rtehtmlarea/class.tx_rtehtmlarea_base.php	(copie de travail)
@@ -840,12 +840,15 @@
 			RTEarea[editornumber].showTagFreeClasses = ' . (trim($this->thisConfig['showTagFreeClasses'])?'true':'false') . ';
 			RTEarea[editornumber].useHTTPS = ' . ((trim(stristr($this->siteURL, 'https')) || $this->thisConfig['forceHTTPS'])?'true':'false') . ';
 			RTEarea[editornumber].tceformsNested = ' . (is_object($this->TCEform) && method_exists($this->TCEform, 'getDynNestedStack') ? $this->TCEform->getDynNestedStack(true) : '[]') . ';
-			RTEarea[editornumber].dialogueWindows = new Object();
-			RTEarea[editornumber].dialogueWindows.defaultPositionFromTop = ' . (isset($this->thisConfig['dialogueWindows.']['defaultPositionFromTop'])? intval($this->thisConfig['dialogueWindows.']['defaultPositionFromTop']) : '100') . ';
-			RTEarea[editornumber].dialogueWindows.defaultPositionFromLeft = ' . (isset($this->thisConfig['dialogueWindows.']['defaultPositionFromLeft'])? intval($this->thisConfig['dialogueWindows.']['defaultPositionFromLeft']) : '100') . ';
-			RTEarea[editornumber].dialogueWindows.doNotResize = ' . (trim($this->thisConfig['dialogueWindows.']['doNotResize'])?'true':'false') . ';
-			RTEarea[editornumber].dialogueWindows.doNotCenter = ' . (trim($this->thisConfig['dialogueWindows.']['doNotCenter'])?'true':'false') . ';';
-
+			RTEarea[editornumber].dialogueWindows = new Object();';
+		if (isset($this->thisConfig['dialogueWindows.']['defaultPositionFromTop'])) {
+			$configureRTEInJavascriptString .= '
+			RTEarea[editornumber].dialogueWindows.positionFromTop = ' . intval($this->thisConfig['dialogueWindows.']['defaultPositionFromTop']) . ';';
+		}
+		if (isset($this->thisConfig['dialogueWindows.']['defaultPositionFromLeft'])) {
+			$configureRTEInJavascriptString .= '
+			RTEarea[editornumber].dialogueWindows.positionFromLeft = ' . intval($this->thisConfig['dialogueWindows.']['defaultPositionFromLeft']) . ';';
+		}
 			// The following properties apply only to the backend
 		if (!$this->is_FE()) {
 			$configureRTEInJavascriptString .= '
Index: typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js
===================================================================
--- typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js	(révision 10506)
+++ typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js	(copie de travail)
@@ -4500,30 +4500,26 @@
 	 */
 	getWindowDimensions: function (dimensions, buttonId) {
 			// Apply default dimensions
-		var dialogueWindowDimensions = {
+		this.dialogueWindowDimensions = {
 			width: 250,
-			height: 250,
-			top: this.editorConfiguration.dialogueWindows.defaultPositionFromTop,
-			left: this.editorConfiguration.dialogueWindows.defaultPositionFromLeft
+			height: 250
 		};
+			// Apply default values as per PageTSConfig
+		if (this.editorConfiguration.dialogueWindows) {
+			Ext.apply(this.dialogueWindowDimensions, this.editorConfiguration.dialogueWindows);
+		}
 			// Apply dimensions as per button registration
 		if (this.editorConfiguration.buttonsConfig[buttonId]) {
-			Ext.apply(dialogueWindowDimensions, this.editorConfiguration.buttonsConfig[buttonId].dimensions);
+			Ext.apply(this.dialogueWindowDimensions, this.editorConfiguration.buttonsConfig[buttonId].dimensions);
 		}
 			// Apply dimensions as per call
-		Ext.apply(dialogueWindowDimensions, dimensions);
+		Ext.apply(this.dialogueWindowDimensions, dimensions);
 			// Overrride dimensions as per PageTSConfig
 		var buttonConfiguration = this.editorConfiguration.buttons[this.editorConfiguration.convertButtonId[buttonId]];
 		if (buttonConfiguration && buttonConfiguration.dialogueWindow) {
-			Ext.apply(dialogueWindowDimensions, buttonConfiguration.dialogueWindow);
-			if (buttonConfiguration.dialogueWindow.top) {
-				dialogueWindowDimensions.top = buttonConfiguration.dialogueWindow.positionFromTop;
-			}
-			if (buttonConfiguration.dialogueWindow.left) {
-				dialogueWindowDimensions.left = buttonConfiguration.dialogueWindow.positionFromLeft;
-			}
+			Ext.apply(this.dialogueWindowDimensions, buttonConfiguration.dialogueWindow);
 		}
-		return dialogueWindowDimensions;
+		return this.dialogueWindowDimensions;
 	},
 	/**
 	 * Make url from module path
@@ -4579,6 +4575,9 @@
 			// Close the window if the editor changes mode
 		this.dialog.mon(this.editor, 'HTMLAreaEventModeChange', this.close, this, {single: true });
 		this.saveSelection();
+		if (typeof(this.dialogueWindowDimensions) !== 'undefined') {
+			this.dialog.setPosition(this.dialogueWindowDimensions.positionFromLeft, this.dialogueWindowDimensions.positionFromTop);
+		}
 		this.dialog.show();
 		this.restoreSelection();
 	},