That's Good point for website. Professional website should work in several web browsers like Chrome, Firefox, Safari & Internet Explorer. you use cross browser compatibility tool as CloudTesting tool that is widely used by web developer.
This tool will test your site on
Internet Explorer 6, 7, 8
Google Chrome Latest Version
Apple Safari 3.2, 4.0, 5.0
Mozilla Firefox 3, 3.5, 3.6
gives you all issue so that you can easily solve them.