Joomla! 2.5 alias for external url menu

By default, Joomla! 2.5 doesn't have alias for external url menu (hope it will be fixed next time). So it will insert datetime to the url for sub menus of this menu type.
Howerver, you can create an alias for this menu type as the following work around:
1. Change to another type of menu ==> fill alias name ==> save
2. Change back to external url type ==> save
Ola, done.

Joomla! 2.5 Menu Manager: Link CSS Style

To assign a custom CSS class to a Joomla menu link

1. From the Joomla Admin menu, select Menus > Main Menu (or whatever menu you want to edit).
2. Click the menu link to which you want to assign a custom CSS class.
3. From the menu options on the right side of the page, click Link Type Options.
   
   
4. In the Link CSS Style field, enter a CSS class name
   
   IMPORTANT: Use only alpha numerical characters, hyphens, and underscores, but no spaces.
5. Click Save & Close to save your changes.
   
   Joomla adds the custom class to the menu link.
   
   
6. Now you can use a CSS class to create custom formatting for the link you modified. For example, create a CSS class in your css stylesheet; make sure to use the exact same class name you used in the link:
   a.homestyle {color:#fff;font-size:11px;background:#666}

Joomla! 2.5 free drop down menu

DJ-Menu is a good drop down menu.

Download: http://extensions.joomla.org/extensions/structure-a-navigation/menu-systems/drop-a-tab-menus/16232

Parameters instruction: http://dj-extensions.com/dj-menu/blog


DJ-Menu is a suckerfish menu with animated mootools effects.
Now, you can easily manage whether the menu is animated or just scriptless css drop-down.
Navigate Extensions > Module Manager and choose DJ-Menu module.
Let's take a look at Module Parameters:

Short description:

• Menu name – choose the name of menu (default is mainmenu) Navigate to Menus > Menu Manager
  
  
  
  
  
• Include default css – if you want to change menu CSS styling, change this parameter to 'No' and copy djmenu.css and djmenu_fx.css files from /modules/mod_djmenu/assets/css/ into /templates/[your_template]/css/. Then you may change font sizes, colors, backgrounds, etc. of DJ-Menu elements. The only difference between djmenu.css and djmenu_fx.css is replacement of all occurences of 'li:hover' (djmenu.css) with 'li.hover' (djmenu_fx.css)
  Notice!

  If you upgrade your DJ-Menu from version less than 1.5.0 you also need to replace all occurences of '#dj-main' with '.dj-main'.
• Enable Effects - if Yes, submenus will be showing and hiding with nice mootools effects. Requirements: Joomla! 1.5.19+ , enabled 'System - Mootools Upgrade' plugin (available since Joomla! 1.5.19 as core plugin)
• Wrapper id - submenu will change direction if it goes out the container with wrapper id. Default wrapper is container with .dj-main class
• Vertical transition at first level - enable vertical transition of submenu at first level. You can mix vertical, horizontal and fade transition as you want.
• Horizontal transition at first level - enable horizontal transition of submenu at first level. You can mix vertical, horizontal and fade transition as you want
• Fade effect at first level - enable fade transition of submenu at first level. You can mix vertical, horizontal and fade transition as you want
• Vertical transition at other levels - enable vertical transition of submenu at second and further levels. You can mix vertical, horizontal and fade transition as you want.
• Horizontal transition at other levels - enable horizontal transition of submenu at second and further levels. You can mix vertical, horizontal and fade transition as you want
• Fade effect at other levels - enable fade transition of submenu at second and further levels. You can mix vertical, horizontal and fade transition as you want
• Tansition effect – choose the transition effect type
• Effect duation - set effect duration time in miliseconds (1000 ms = 1 second)
• Delay time before close submenu - set delay time in miliseconds (1000 ms = 1 second)

Notice!

Remember to publish System – Mootools Upgrade plugin to get mootools effects work properly.
Navigate to Extensions > Plugin Manager and check if the plugin is published.
Requirements:
Joomla! 1.5.19+ (plugin is available since Joomla! 1.5.19 as core plugin)