Bug 141894. Security button in msgCompose should have a tooltip. r=kaie@netscape.com, sr=sspitzer@netscape.com

mailnews/extensions/smime/resources/content/msgCompSMIMEOverlay.xul

@@ -61,7 +61,7 @@
   <hbox id="toolbar_button_box">
     <toolbarbutton id="button-security" type="menu-button" insertbefore="saveSeparator"
                    oncommand="doSecurityButton();" class="toolbarbutton-1"
-                   label="&securityButton.label;">
+                   label="&securityButton.label;" tooltiptext="&securityButton.tooltip;">
       <menupopup onpopupshowing="setSecuritySettings(2)">
         <menuitem id="menu_securityNoEncryption2" type="radio" name="encryptmessage" 
           accesskey="&menu_securityNoEncryption.accesskey;" label="&menu_securityNoEncryption.label;" oncommand="setNextCommand('noEncryption');"/>

mailnews/extensions/smime/resources/locale/en-US/msgCompSMIMEOverlay.dtd

@@ -19,6 +19,7 @@
 <!ENTITY menu_securityStatus.accesskey "M">
 
 <!ENTITY securityButton.label "Security">
+<!ENTITY securityButton.tooltip "View or change security settings">
 
 <!ENTITY menu_viewSecurityStatus.label "Message Security Info">
 <!ENTITY menu_viewSecurityStatus.accesskey "I">