Modification in Characteristics selection method

Dear Sir

i realy like all functionality of hikashop its fulfilled all my requirement but currently i am working on site of my client
who required specific way to select variants . select different sizes and quantity and add atonce.

www.directwholesaleapparel.com/tanksslee...hetti-Strap-Tank-Top

the url shows requirement i know table, radio and dropdown doesn't fulfill my client requirement i have searched a lot on forum
no success i tried to edit characteristic.php but not able to understand please reply i have resolved lot problem by forum first time i am asking my question.

Thanks in Advance your reply.

Thanks for your reply jerome

Its good you are adding this option in next version but my problem is that i have to complete my site
with this option only give me some idea which file i need to edit and its root i know php i will try to edit it my self. i can add this option in virtuemart but my experience is facing lots of bugs in vm. after the adopted hikashop i always suggest developer to move on hikashop its excellent and going to great.

only some idea can my bigger help.
Thanks in advance.