The list of groups, facilitating the search of a definite component, is placed on the left of the on-line catalogue's page in the form of a tree index or a list in alphabetical order. There is a picture index in the centre presenting the arrangement of groups of products in the form of photos. After marking the chosen group in the centre of the page a list of its products will be shown.
Next to the descriptions of products shown as the result of inquiry put in the search engine window there is a button "Group" . This is the button leading to the group that includes the searched product.
The described function is especially helpful during the search of products similar to those shown as the search result.