Try to fix issues with the junk button not showing the deleted state caused by

Bug #233791

mail/base/content/mailWindowOverlay.xul

@@ -1697,12 +1697,12 @@
 
       <toolbaritem id="button-junk">       
         <deck id="junk-deck" observes="button_junk">
-          <toolbarbutton class="toolbarbutton-1"
+          <toolbarbutton class="toolbarbutton-1 junk-button"
                    label="&junkButton.label;"
                    tooltiptext="&junkButton.tooltip;" 
                    observes="button_junk"
                    oncommand="goDoCommand('button_junk')"/>
-          <toolbarbutton class="toolbarbutton-1"
+          <toolbarbutton class="toolbarbutton-1 junk-button" 
                    label="&notJunkButton.label;"
                    tooltiptext="&notJunkButton.tooltip;" 
                    observes="button_junk"

mail/base/skin/primaryToolbar.css

@@ -142,15 +142,15 @@ toolbar[mode="text"] .toolbarbutton-text {
   -moz-image-region: rect(60px 210px 90px 180px) !important;
 } 
 
-#button-junk{
+.junk-button {
   -moz-image-region: rect(0px 240px 30px 210px);
 }
 
-#button-junk:hover {
+.junk-button:hover {
   -moz-image-region: rect(30px 240px 60px 210px);
 }
 
-#button-junk[disabled="true"] {
+.junk-button[disabled="true"] {
   -moz-image-region: rect(60px 240px 90px 210px) !important;
 }