When you talk to the representatives at AC, they too will tell you how bad their site is. AC site throws javascript errors and has a lot of techincal issues that needs to be fixed if they want to compete in a global level. I don't think the website is even tested to run on any other browser besides IE!!
Come on AC, wakeup and fix your website! The big boys who book 7K business class seats don't have time to wait around, they probably will just go to another airliner!