if ((screen.width == 800) && (screen.height == 600))
     {document.write("<link href='css/1024.css' rel='stylesheet' type='text/css'>")}

else if (screen.width > 1024)
     { document.write("<link href='css/1280.css' rel='stylesheet' type='text/css'>")}

else 
     {document.write("<link href='css/1024.css' rel='stylesheet' type='text/css'>")}