function browsernote() {
   if (navigator.cookieEnabled) {
     if ( document.cookie.indexOf('geckomac=') ==-1 ) {setCookie2(); }
   } 
   else { popup2(); }
}


function setCookie2() {   
          
today = new Date();
expiry = new Date(today.getTime() + 24*60*60*1000);   // cookie expires after 1 day
document.cookie='geckomac=yes; expires='+expiry.toGMTString()+'; path=/'; 
popup2(); 
}


function popup2() {
if (mac!=-1) {alert('Please note that your browser may not correctly display the formulae on this page; it is suggested to download the Rich Text version of the paper (which should display correctly in most word processors.');}
   else {
if (gec!=-1) {alert('Please note that Gecko- based browsers (e.g. Firefox or Netscape ( 6 +) ) do not support the Symbol font anymore by default; the formulae on this page may therefore not be correctly displayed in these browsers; it is suggested to view this page in Internet Explorer or download the Rich Text version of the paper (which should display correctly in most word processors).; alternatively you may want to reconfigure your browser to support the Symbol font (at the bottom of this page is a link explaining how to do this)');}
      }
 }


var gec=-1;
var mac=-1;

if (navigator.userAgent) {gec=navigator.userAgent.search(/Gecko\//); 
                                          mac=navigator.userAgent.search(/Mac/);            
                                          }