Cross browser issues and Jquery issues on website need troubleshooting

Hi - my website looks and works great on Firefox (8.0.1) however has some issues with IE and safari. I need someone to assist with fixes for browsers IE6-9, Firefox, Safari, Chrome, and any other suggested browsers predominantly used in Australia. Uses the Adobe Business catalyst system. I also have some jquery issues with the add to cart breaking the jquery on the product page(IE8), and an issue with my home page slideshow (coda slider) displaying in Safari. There are more minor CSS related issues here and there, but if you think you might be able to assist please let me know. I would be keen to have the site launched first week of January. I don't think it is a major job, but I will let you decide. [login to view URL]