if($.client.os == 'Mac' && $.client.browser == 'Safari') {	
				document.write('<link type="text/css" rel="stylesheet" media="screen" href="/styles/mac_safari.css" />');
			}
			if($.client.os == 'Mac' && $.client.browser == 'Firefox') {	
				document.write('<link type="text/css" rel="stylesheet" media="screen" href="/styles/mac_moz.css" />');
			}