You can actually get to browser tab from Menu Tabs >...

minimo/chrome/content/minimo.js

@@ -365,10 +365,15 @@ function BrowserMenuTabsActive() {
     tabItem=gBrowser.mTabContainer.childNodes[i];
     var tabMenuElement=document.createElement("menuitem");
     tabMenuElement.setAttribute("label",tabItem.label);
+    tabMenuElement.setAttribute("oncommand","BrowserTabFocus("+i+")");    
     document.getElementById("MenuTabsContainer").appendChild(tabMenuElement);	
   }
 }
 
+function BrowserTabFocus(i) {
+	gBrowser.selectedTab=gBrowser.mTabContainer.childNodes[i];
+}
+
 /* 
  * Menu > Tabs -> destroy tab reference elements.
  * When the XUL Nav menu > id="MenuTabsContainer" is hidden,