Bug #26586 --> a work around for this bug. set the value for each titledbutton before we add it to the document

and again after we add it to the document. This forces the to/from/cc email address to show up. Sometimes it wasn't
showing up. The cause is related to bug #26741.

r=sspitzer

mailnews/base/resources/content/msgHdrViewOverlay.js

@@ -378,7 +378,9 @@ function InsertEmailAddressUnderEnclosingBox(parentBox, parentDiv, emailAddress,
     var item = document.createElement("titledbutton");
     if ( item && parentDiv) 
     { 
-   
+      item.setAttribute("class", "emailDisplayButton");
+      item.setAttribute("value", fullAddress); 
+
       if (parentDiv.childNodes.length)
       {
         var child = parentDiv.childNodes[parentDiv.childNodes.length - 1];