Do not forget to replace "ID" with the ID of one of the created categories.
The parameter "Image Width" sets the image width for the storewide thumbnail image.
The parameter "Image Height" sets the image height for the storewide thumbnail image.
Code example
Note! The image width can not exceed the width of the column. The column width is set here: System--> Configuration-->Smart Catalog
This is a guide on how to show selected category and configure its image dimensions (image size, column width).
The AJAX Catalog Magento extension lets you make the whole list of products loaded immediately without pagination or page reloading.
Magento extension frontend features: responsive layout, no paging, AJAX product loader, configurable image size, configurable column width, user-friendly toolbar information, Ajax pagination and filtering. Make the display of Magento catalog more presentable.