working in virtuemart

the flyout template "hotfurniture" is not prepared to work with atributes for products, it is not displaying right the atributes selectors and "add to cart" button and is not changing the price. I should have the possibility to show the atributes in drop down lists and to chose the right type of product and then to update the price, and finaly to have the possibility to add to cart one or more of those products.
I saw that in yor demo site is the same problem at product "mattresses 3 colour". do you like how this is displayed?
How is possible to fix this?
Please help me, thank you.

Please unzip and upload attached files in the directories, as follows:

theme.css -> /components/com_virtuemart/themes/hot_furniture

addtocart_form.tpl.php -> /components/com_virtuemart/themes/hot_furniture/product_details/includes

The existing files should be overwritten. Also, please check our demo page now to see how we fixed the error.

it's working, thank you verry much.