NN = document.layers; 
IE = document.all; 
isMac = (navigator.appVersion.indexOf("Mac") != -1); 
isWin = (navigator.appVersion.indexOf("Win")!= -1); 

if (parseInt(navigator.appVersion.substring(0,1)) >= 4) {
		 if (NN && isWin) {cs="win_ns.css";}
	else if (NN && isMac) {cs="mac_ns.css";}
	else if (IE && isWin) {cs="win_ie.css";}
	else if (IE && isMac) {cs="mac_ie.css";}
	else if (isMac) {cs="mac_ns.css";}
	else {cs="other.css";}
} else {cs="other.css";}

document.write('<link rel=stylesheet type="text/css" href="http://www.apsanet.org/~polcomm/css/' + cs + '">');
//document.write('<link rel=stylesheet type="text/css" href="http://localhost/css/' + cs + '">');