/* determine the platform */
system = (navigator.appVersion.indexOf("Mac") == -1) ? "PC" : "MAC";

/* determine the browser */
d = document;
w = window;
ie = ((d.all) && (w.offscreenBuffering)) ? true : false;
nn = ((d.captureEvents) && (!d.getElementById)) ? true : false;
mz = ((d.getElementById) && (!d.all) && (d.documentElement)) ? true : false; 

/* Style Sheets for PC */
if (ie && (system=="PC")) 
document.write("<link rel=stylesheet type='text/css' href='../css/pcie.css'>");

if (nn && (system=="PC")) 
document.write("<link rel=stylesheet type='text/css' href='../css/pcns.css'>");

if (mz && (system=="PC")) 
document.write("<link rel=stylesheet type='text/css' href='../css/pcmz.css'>");
/* Style Sheets for MAC */
if (ie && (system=="MAC")) 
document.write("<link rel=stylesheet type='text/css' href='../css/macie.css'>");

if (nn && (system=="MAC")) 
document.write("<link rel=stylesheet type='text/css' href='../css/macns.css'>");

if (mz && (system=="MAC")) 
document.write("<link rel=stylesheet type='text/css' href='../css/macmz.css'>");