Magento Megamenu – Magento Menu is the useful for show the category in a more interactive manner with their images. Magento Supported Version: Magento version 1.6.x.x, Magento version 1.7.x.x, Magento version 1.8.x.x
Installation and configuration - Its pretty easy you just need to move all folder (app, js) into magento root that’s it . After moving both t
he folder flush the cache from Magento admin module . Under system > cache management 
Configuration Setting - Its pretty easy to set the megamenu setting. 
After setting go frontend the category lokks like 
That’s all for the Magento Megamenu, still have any issue feel free to add a ticket and let us know your views to make the module better http://webkul.com/ticket/index.php