Index: typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js
===================================================================
--- typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js	(révision 7668)
+++ typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js	(copie de travail)
@@ -1707,7 +1707,13 @@
 	var range = this._createRange(selection);
 	if (HTMLArea.is_gecko) {
 		var parentStart = range.startContainer;
+		if (/^(body)$/i.test(parentStart.nodeName)) {
+			parentStart = parentStart.firstChild;
+		}
 		var parentEnd = range.endContainer;
+		if (/^(body)$/i.test(parentEnd.nodeName)) {
+			parentEnd = parentEnd.lastChild;
+		}
 	} else {
 		if (selection.type !== "Control" ) {
 			var rangeEnd = range.duplicate();
Index: typo3/sysext/rtehtmlarea/htmlarea/plugins/BlockElements/block-elements.js
===================================================================
--- typo3/sysext/rtehtmlarea/htmlarea/plugins/BlockElements/block-elements.js	(révision 7668)
+++ typo3/sysext/rtehtmlarea/htmlarea/plugins/BlockElements/block-elements.js	(copie de travail)
@@ -607,32 +607,34 @@
 		if (endBlocks.start === endBlocks.end) {
 			--index;
 		}
-		for (var block = startAncestors[index]; block; block = block.nextSibling) {
-			if (HTMLArea.isBlockElement(block)) {
-				switch (buttonId) {
-					case "Indent" :
-						if (!HTMLArea._hasClass(block, this.useClass[buttonId])) {
-							HTMLArea._addClass(block, this.useClass[buttonId]);
-						}
-						break;
-					case "Outdent" :
-						if (HTMLArea._hasClass(block, this.useClass["Indent"])) {
-							HTMLArea._removeClass(block, this.useClass["Indent"]);
-						}
-						break;
-					case "JustifyLeft"   :
-					case "JustifyCenter" :
-					case "JustifyRight"  :
-					case "JustifyFull"   :
-						this.toggleAlignmentClass(block, buttonId);
-						break;
-					default :
-						break;
+		if (!/^(body)$/i.test(startAncestors[index].nodeName)) {
+			for (var block = startAncestors[index]; block; block = block.nextSibling) {
+				if (HTMLArea.isBlockElement(block)) {
+					switch (buttonId) {
+						case "Indent" :
+							if (!HTMLArea._hasClass(block, this.useClass[buttonId])) {
+								HTMLArea._addClass(block, this.useClass[buttonId]);
+							}
+							break;
+						case "Outdent" :
+							if (HTMLArea._hasClass(block, this.useClass["Indent"])) {
+								HTMLArea._removeClass(block, this.useClass["Indent"]);
+							}
+							break;
+						case "JustifyLeft"   :
+						case "JustifyCenter" :
+						case "JustifyRight"  :
+						case "JustifyFull"   :
+							this.toggleAlignmentClass(block, buttonId);
+							break;
+						default :
+							break;
+					}
 				}
+				if (block == endAncestors[index]) {
+					break;
+				}
 			}
-			if (block == endAncestors[index]) {
-				break;
-			}
 		}
 	},