js & ajax bug fixes in oscommerce

Im looking for a service provider who can fix some js & ajax bugs. 1. I have a product scroller on my home page. The problem is in Firefox it causes the page to slow working breifly. Sometime the page stops working altogether. It seems to work fine in IE though, but the products move in a different directin if Firefox. I need it moving in the same direction for all browsers and fix the bug cuasing the page to slow or crash. 2. I have an ajax shopping cart and info box. You should be able to remove products from the shopping cart info box and it will also remove them from the main shopping cart. The problem is it doesnt remove them from the shopping cart, the loading gif starts then hangs. If you update the quantity from the info box, the quantity is not updated in the shopping cart. You aslo cant update the quanity from the main shopping cart, the loading gif just hangs. Im looking for this project to be completed in 1 day and I will pay $30 max to fix these problems. Please dont bid if you cant fix this or want more money than $30. I've paid alot more than this already and still chasing bugs and paing to get someone else to fix it.