Debug our nopcart - a free javascript cart

hello, i'm searching for a skilled person to debug the [login to view URL] on my website. generally: nopcart is a free and nice javascript shopping cart. see the website [login to view URL] . this one is implemented in my website f.e. [login to view URL] ! it works, but it generates an error several times. the known errors: - the cart generates an error called 'bLanguageDefined' is undefined Zeile: 138 Zeichen: 1 - in different situations the user add an uploaded image or an image from my gallery to the cart, its also in the cart overview but when they will click "add another" or whatever on the overview site there is nothing in the cart. it looks like a cookie-problem. when the user add the image secound time, it works without problems!??? i dont no?? your part is: debug the code, found the errors and make the small coding optimazions to get the cart working perfectly! one thing: the script must work in all standart browsers. for example IE > 6 to 8 RC1, Opera, Firefox and Chrome. payment when this small job is done via GAF escrow.