//platform check

if (navigator.userAgent.indexOf('Mac') != -1){
    if (navigator.appName.indexOf('Netscape') != -1) {
        document.write("<link rel='stylesheet' href='css/mac.css' type='text/css'>")
        }
   else {
        document.write("<link rel='stylesheet' href='css/ie.css' type='text/css'>")
        }
    }

if (navigator.userAgent.indexOf('Win') != -1){
    if (navigator.appName.indexOf('Netscape') != -1) {
        document.write("<link rel='stylesheet' href='css/win.css' type='text/css'>")
        }
   else {
        document.write("<link rel='stylesheet' href='css/ie.css' type='text/css'>")
        }
    }

//end platform check