Bug 495436: Leave tab area open after a tab is closed, r=mfinkle

mobile/chrome/content/browser.xul

@@ -200,7 +200,7 @@
     <vbox id="tabs-container" class="panel-dark"
           left="0" top="0"
           constraint="ignore-y,vp-relative">
-      <richlistbox id="tabs" onselect="BrowserUI.selectTab(this.selectedItem);" onmouseup="BrowserUI.hideTabs();" onclosetab="BrowserUI.closeTab(this);"/>
+      <richlistbox id="tabs" onselect="BrowserUI.selectTab(this.selectedItem);" onclick="BrowserUI.hideTabs();" onclosetab="BrowserUI.closeTab(this)"/>
       <hbox id="tabs-controls">
         <toolbarbutton id="newtab-button" class="button-image" command="cmd_newTab"/>
       </hbox>