You can do it with some limitations. You have to chage Reprting Services css. Take a lokk at:

http://stackoverflow.com/questions/5428017/cannot-view-ssrs-2008-r2-ssrs-2012-reports-in-safari-chrome-but-works-fine-in

and

http://stackoverflow.com/questions/5968082/ssrs-2008-r2-ssrs-2012-reports-are-blank-in-safari-and-chrome