// JavaScript Document
if(navigator.appVersion.indexOf("Win") != -1)
  {
    document.write('<link href="style/05win.css" rel="stylesheet" type="text/css">');
  }
  else if(navigator.appVersion.indexOf("Mac") != -1)
  {
    document.write('<link href="style/05mac.css" rel="stylesheet" type="text/css">');
  }
  else document.write('<link href="style/05win.css" rel="stylesheet" type="text/css">');