Código:
¿Alguna idea? Gracias <script type="text/javascript"> if(screen.width<=750) document.write('<link href="css/r750.css" rel="stylesheet" type="text/css" />'); else if(screen.width<=1180) document.write('<link href="css/r1180.css" rel="stylesheet" type="text/css" />'); else document.write('<link href="css/r1440.css" rel="stylesheet" type="text/css" />'); document.write('<link href="css/r1440.css" rel="stylesheet" type="text/css" />') </script>