// JavaScript Document

if (screen.width < 801)  

{  document.write('<link rel="stylesheet" type="text/css" href="small.css">');}

if ((screen.width > 800)&&(screen.width <= 1279))  

{  document.write('<link rel="stylesheet" type="text/css" href="medium.css">');}

if (screen.width >= 1280) 

{  document.write('<link rel="stylesheet" type="text/css" href="large.css">');

}