diff --git a/mozilla/profile/resources/pm.xul b/mozilla/profile/resources/pm.xul
index a56348f20d9..d38d55c1b01 100644
--- a/mozilla/profile/resources/pm.xul
+++ b/mozilla/profile/resources/pm.xul
@@ -47,6 +47,7 @@ xmlns:html="http://www.w3.org/TR/REC-html40"
 <html:script language="javascript" src="pm.js">
 </html:script>
 	    
+<html:div flex="100%" style="width: 100%; height: 100%;">
 <html:div style="width: 300px; margin: 5px;">&intro;</html:div>
 <html:div>&intro.new;</html:div> 
 <html:div>&intro.delete;</html:div> 
@@ -54,7 +55,7 @@ xmlns:html="http://www.w3.org/TR/REC-html40"
 <html:br></html:br>
 <html:br></html:br>
 <box align="horizontal" style="width: 75%; height: 70%;">
-	<tree id="tree" style="background-color: white; width: 75%; height: 70%; margin: 2px;" 
+	<tree id="tree" flex="100%" style="background-color: white; width: 75%; height: 70%; margin: 2px;" 
 		onclick="return showSelection(event.target.parentNode);">
 	  <treecol style="width: 25%"/>
 	  <treecol style="width: 50%"/>
@@ -101,4 +102,6 @@ xmlns:html="http://www.w3.org/TR/REC-html40"
 	</box>
 </box>
 
+</html:div>
+
 </window>
diff --git a/mozilla/profile/resources/test-content1_1.xul b/mozilla/profile/resources/test-content1_1.xul
index e5af705b84c..04cd1be4c29 100644
--- a/mozilla/profile/resources/test-content1_1.xul
+++ b/mozilla/profile/resources/test-content1_1.xul
@@ -36,7 +36,8 @@ xmlns:html="http://www.w3.org/TR/REC-html40"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" class="dialog"
 		width="500" height="500"
 		onload="parent.wizardPageLoaded('content1_1');"> 
-      	    
+
+<html:div flex="100%" style="width: 100%; height: 100%;">
 <html:div style="width: 300px;">&heading;</html:div>
 <html:br/>
 
@@ -50,6 +51,6 @@ xmlns:html="http://www.w3.org/TR/REC-html40"
 <html:div>&para.three;</html:div>
 <html:br/>
 <html:div>&para.four;</html:div>
-
+</html:div>
 
 </window>
diff --git a/mozilla/profile/resources/test-content1_2.xul b/mozilla/profile/resources/test-content1_2.xul
index 992e92e5814..0846315e1aa 100644
--- a/mozilla/profile/resources/test-content1_2.xul
+++ b/mozilla/profile/resources/test-content1_2.xul
@@ -66,6 +66,7 @@ function commit()
 setTimeout("foo()", 0);
 </html:script>
 
+<html:div flex="100%" style="width: 100%; height: 100%;">
 
 <html:div>&intro;</html:div> 
 <html:br/>
@@ -80,5 +81,6 @@ setTimeout("foo()", 0);
 <html:br/>
 <html:br/>
 <html:div>&para;</html:div> 
+</html:div>
 
 </window>