// JavaScript Document
if (screen.width < 801)  {
  document.write('<link rel="stylesheet" type="text/css" href="800.css">');
}
if ((screen.width >=801)&&(screen.width <= 1279))  {
  document.write('<link rel="stylesheet" type="text/css" href="1024.css">');
}
if (screen.width >= 1279) {
  document.write('<link rel="stylesheet" type="text/css" href="1280.css">');
}