// browser and platform styles check
if ((navigator.userAgent.indexOf("Mac") != -1)){
		if (navigator.appName.indexOf('Netscape') != -1) {
			document.write("<link rel='stylesheet' href='/styles/mac_nav.css'>")
			}
			else {document.write("<link rel='stylesheet' href='/styles/mac_ie.css'>")
			};
		};
if (navigator.userAgent.indexOf('Win') != -1){ 
		if (navigator.appName.indexOf('Netscape') != -1) {
		document.write("<link rel='stylesheet' href='/styles/pc_nav.css'>")
		}
		else {document.write("<link rel='stylesheet' href='/styles/pc_ie.css'>")
		};
};