Get the Weight listed in Prestashop home page

I've these .js, .php & .tpl files for my Prestashop theme, it makes a table with the attributes including price, quantity and auto calculates them in the end, I wish to add the weight, the reference number and Barcode to this table, I really don't know how to fix it, this a developer idea, but I failed in changing them To get to change the table for each attribute you need to edit the file: attributegrid.php => function hookProductFooter Then to display them in the TPL file (for single attribute groups types): attributegridsingle.tpl Also to affect and display the weight in the bottom you will have to modify the file: ag_product.js => function ag_qty_change This is the link of the current result, I hope someone help me to edit those three pages, and resned them to me, thanks VERY much Here's the result link Here's the main code three files